Girlfriend cheated with the same guy for about 18 months

She will do it again, people will only cheat on their spouses if their spouses allow it. i

1. she used you.
2. she doesn't love you.
3. she doesn't deserve another chance EVER. she can do it again!
4. she will lie over and over.
5. it will be hard to get over this and re build the trust that has been broken by lies.

you might say you still love her but think about you. is it really worth it to go through it again? you may have forgiven her but do you think you can trust her again? I've been through this and I did not give my ex another chance after I found out. 18 months?

If it was a one time incident, like a drunk hookup that she regretted and felt really bad about, then MAYBE you guys would have a good chance to rebuild. But for her to have done this behind your back for 18 months is unforgivable in my book. I'm almost impressed that she was able to maintain 2 separate relationships for that long. And like the others said, she's destroyed the trust in the relationship. Even if you guys do try to work things out, you're going to be haunted by this and will constantly worry about where she's going and who she's with when she's not with you. As hard as it will be, I think you need to let this girl go.

even if you will forgive her, your relationship will not be the same anymore, you will always quarrel because of trust issues that will eventually most likely ruin your relationship in the end. I can understand she is confused but 18 months and she is still unsure of her feelings? come on! and if you did not found out who knows how long she will continue cheating on you? do yourself a favor don't ever give your relationship a chance again, you wasted 5 years of life and that's enough for that kind of girl.. I know easier said than done and it wouldn't be easy to forget her cause you have learned to live your life that she is beside you but that's the best thing you can do. for now all you can do is to just move forward, little by little you will eventually move on and hopefully you can find someone else to trust again and be more clever perhaps next time?.. :)

1. She doesn't love you. Sorry.
It also sounds like she doesn't have much of a conscience. Keeping up that kind of ruse for so long takes a lot of work... And requires a lot of thinking. She knew what she was doing.
18 months? I'm sorry, but any trust or faith I had in that person would be GONE, SHATTERED and there would be NO chance of repair. In my opinion, it's not worth trying to put behind you in an attempt to salvage the relationship.

If someone can do this to you after 5 1/2 years, then they clearly don't care as much as they say they do/you think they do. And you don't know her as well as you thought you did.
Don't sacrifice your future happiness because you have history with a cheating girl. Make new memories with someone who loves you and won't betray your trust. You will love again, I promise. My first boyfriend cheated on me for over half of our almost 2 year relationship, and I've been able to date again just fine.

The hurt will go away. You just have to move forward.

she has strong feelings for him. Sorry buddy

Tough story.. If I were you I'd start banging new girls left and right.

People are different, and learn from this experience. Don't categorize every person in the same way. It will destroy you in the end.

That being said, unless the other man is sharing in paying some of your bills - rent,food, etc - ask her nicely to GTFO.

Seriously - she lied to you over and over until your got her. If you didn't she would have still lied to you. And the man she has been with for over 5 yrs(that would be you) is cut off emotionally and sexually all this time.

Don't ask for any details. Do you want to drive the stake farther in you heart? Stop looking for excuses why she did what she did. Its Over!

She doesn't care about you! Simple. Pack up her crap, pack her bags, change the locks and leave a note for the other guy - WRITE - "NOW SHE IS NOW YOUR PROBLEM - GOOD LUCK. AND ONE MORE THING - SAVE THIS NOTE FOR THE NEXT GUY YOU WILL NEED TO GIVE THIS TOO"

Good Luck and Walk away with your dignity!

And NEVER EVER EVER Take her back after her fling is over and she says she misses you.

I'm truly worried about you man. I nearly picked up my monitor and threw it against the wall when I read you told her she needed to be honest with you or its over. Are you kidding me? You need to get ticked off...and leave this user loser forever!

To be honest, a real man would not put up with this BS.

You're in the calm before the storm.

You're going to try and rationalize the situation and come up with excuses, pardon her for her crimes, down play the damage she's done. You'll try anything and everything to find a fix. You'll end up getting frustrated and distant. She will then get angry with you. She's going to try and put off some of the blame and say you influenced her choice.

And then everything is going to fall to sh*t. Sorry.

A one time thing with someone cheating would very hard to regain trust, and I'm not sure I could. For 18 months? That's almost impossible for me to. That's living a whole different lifestyle, rife with lies and deceit. That's not love. You don't do something like that to someone you love.