He lied to me about talking to girls online

Hello,
I've been with my boyfriend for 3 years now, we used to be happy and we went on and off 3 times before, but we couldn't stand being away from each other. So we always end up back together
I always had trust issues as he normally doesn't talk to girls that much unless he's hooking up with them, and that's what made me feel suspicious every time he chats with girls on fb while we're together, and because of that we fought a lot.
lately i found out he deleted the conversations he had with the girls because i had his fb password, I knew about it because I opened his fb while he was chatting and he told her to give him his number and if there's a chance they could meet up, I confronted him about it and he said thet he deleted the conversation because he knew I would make a big deal out of nothing and that he is allowed to talk to girls and that I was paranoid and overly jealous, I couldn't stand that he lied to me and hidden the conversation or maybe conversation(s), who knows, so I told him I can't be with someone that I cannot trust and we ended it. after that I was just curious to find out what he did more, I found out he had sent inappropriate pictures of him to a girl from his email.
We had another fight and we ended it for good

That was 3 weeks ago, I truly love him and I know he does, He used to be an absolutely amazing guy and everyone would tell me how respectful he is, but the last few months were like a tornado for his character, he's 21 (almost 22) he started smoking and was so depressed because he had some issues that were affecting him negatively physically and emotionally, I don't know if he did what he did because of what he's going through or is it a non negotiable situation, should I go back to him and try work things out and help him get back on track, because I know he needs me and i need him too, or should I let him go and move on?
I know he's suffering like I am but I just can't forget about all that and have no self respect and throw myself at him after what he did, I need him to appreciate me and work hard to gain my trust again, but at the same time I can't stand being away from him.
I need advice please, I really do love him and I can't imagine being with someone else. What should I do?

I know he's suffering like I am but I just can't forget about all that and have no self respect and throw myself at him after what he did, I need him to appreciate me and work hard to gain my trust again, but at the same time I can't stand being away from him.
I need advice please, I really do love him and I can't imagine being with someone else. What should I do?

You guys really need to open up the lines of communication and do some straight and honest talking. Where did your trust issues stem from? Were they are response to issues that happened in past relationships, or in childhood that have caused you to feel insecure? What is your self esteem like? What was your relationship like before these issues occurred? How is your partner coping with his feelings of depression etc and have they impacted upon his behaviour?

Couples counselling may help you to communicate in ways that are beneficial to both of you, and it may help you to gain a sense of resolution and to find a way forward, whether it is by continuing with this relationship, on different terms that benefit you both, or by breaking up and finding a way to cope with this.

If your boyfriend knows that you are insecure, he should not have any secrets from you that feed upon your insecurity. You, in turn, really need to work upon the cause of your insecurity, and respect his boundaries which means not looking at his e mails etc, irrespective of whether you feel justified in doing so. If he doesn't wish to go to couples counselling with you, you would benefit from therapy in any event.