<human>: Could you distill the essence of the text into 1-3 sentences?

I've been with my girlfriend for the better part of 5 years and we have been living together for 2 years. We both had pretty rough teen years and leaned on each other a lot for emotional support, thankfully though our lives and emotional states have gotten much more stable since we moved in together. 

Two nights ago we were cuddling in bed and she told me how safe and trusted I make her feel. For some reason (I think it has to do with the drinking we had been doing) I had what I can only describe as a mental breakdown. I started crying and told her that I didn't trust her completely and that I was terrified she would leave me, these are all insecurities I thought I had put behind me.

Truth be told I don't know if I have complete trust in her. I do know I trust and love her more than anyone else and I think I really hurt her by saying that. We didn't have time to have a serious talk about that night or yesterday but we're going to when she comes home from work today. I think I already know what I'm going to say but I would really like the opinions of people with a little more experience than I have.
<bot>: Had a drunken breakdown with my girlfriend told her I didn't trust her, looking for advice on how to tell her I still trust her.