I love my girl with all of my heart but the way I show it sometimes is wrong what should I do?

Yeah you should talk to her. If you care about her so much, then you should easily be able to sit down and talk to her about it. I, myself, have realized that sometimes guys say things that come out harsh,. But that they don't mean it. Just tell her how you feel, I don't see why she would get upset or anything.

My heart really goes out to you, I have been in a similar relationship where I felt the same way. But being jealous and saying harsh things never works, it usually just makes things worse. Especially if you question her about her talking to other people all the time. Does she give you any reason for you to think she is doing anything wrong? You really need to talk with her about your feelings without accusing her of anything wrong though. And once you talk and you say what you need to, you just need to let it go. This is something that really needs to be worked out if you are really serious about getting married, because it won't go away it will only get worse. I hope it works out for you.

The only way to get secure is to tell her how you feel and don't treat her harshly, because she may end up walking away, if she's with you- she loves you or likes you a lot, and she needs to know that you feel the same. But you can't separate her from other people or talking to them, everybody needs space and I mean let her do her things. What you need is to learn how to trust.

Just grow up. If she wants to talk to other people she can. If you are uncomfortable with it tell her and see how she reacts.

Look her in the eye and tell her straight up