Should I leave it alone?

Are you really saying that your relationship is boring or are you trying to make us talk you into pursuing the co-worker with the title here? If I feel that my day is boring, then I go do something about it. If you feel your relation is boring then you should do something about it, not just sit there and complain about it and then use it as an excuse to throw yourself into someone else's arms. I totally agree with sweetvalle03, rocket and sfcswede..

I agree with Rocket. Either end the relationship or stick with it and try to glean back the magic. Find things you both enjoy. The grass always seems greener on the other side, and you may find your "cool work crush" may be a total zero and you left a good guy (albeit boring right this second) for nothing. Besides....he has a girl, do you really want to be the second woman or a booty call???

Yeah, it sounds harsh, but there's really no excuse to chuck 2.5 years down the toilet just because you're BORED. if your boyfriend bored? you may have absolutely no idea how he feels about your relationship. if you want to add some gusto back into the relationship, talk to him and see what you two can do about it: together. it would not be worth your while (or fair to your current BF) to embark on a fruitless pursuit of another guy--who is currently dating someone else, a big NO NO--just to avoid a problem that could be easily remedied. relationships take work, and yeah, that includes working through dry spells (not just when it comes to sex either). but it's a labor of love, as I like to call it, and if you love your boyfriend, do the respectful and honest thing and talk to him and give him the chance to put his two cents in before you make any rash decisions.

If you want to start with the other guy, please break up with your boyfriend.
You have a right to pursue your happiness but do not break his heart in the process.
Honestly, if you really love each other, you should not give up so easily, work on the relationship you have now and cherish it. Only when you have tried everything to make it work can you then be fair to him and yourself and end the relationship.
Suggestions for spicing up the relationship would include for you to try out each other interests, get involve with what he is interested and it would often help you understand each other better.

Oh please don't fall for the my co worker and I have more in common thing! Its ridiculous, being different is what makes life exciting! you don't want to date someone exactly like you, trust me, you clash more than you'll believe, instead of just quitting now, all that's happening is you both are growing, but grow together, not apart, take time to look at some of his interests for instance my husband loves video games, and I can stand them to a point, but to be with him I'll sit and watch him play for a bit, and I'll listen to him babble on about a level or whatever, and yes its boring as hell but I love him so I do it the same for him he hates swimming but I love it and he'll sacrifice time to go to the pool with me 2-3 times a week that's what you do when you love someone sacrifice, try some of his things and have him try yours, if not accept that there's nothing much and in common and enjoy the one thing you both love. I love movies and so does my husband so every other weekend, we rent 2 movies, and buy some fast food, then we munch while watching the movi together, it'll work.

Don't pursue another guy when you're already in a relationship! That is cheating and never a good idea for so many reasons. Relationships get boring so you and your boyfriend need to either figure out a way to spice things up or you're not really interested in being in the relationship and it might be time to break it off and move on. But, all relationships do get boring even with fancy-work-crush guy so don't look at him - or anyone else - as some great option...you'd be right back where you are now in 2 years, know what I mean? Kudos to you for asking what to do before you did anything stupid. :) Good luck!