Four years ago I began dating a girl that I fell in love with way too fast. She became everything to me and I hardly spent any time with anyone else. Everything seemed perfect. Fast forward about a year and a half, and I was asked how I felt about my girlfriend and everything spiraled out of control. I got physically sick to the point where I couldn't do anything for days. That sickness subsided for the most part, but from then on I had a nagging feeling that the relationship wasn't right. I finally broke it off in April of 2016, and now looking back that was a great decision. Now I have a problem. I have that same nagging, anxious feeling every time I get in a relationship. That nagging feeling always tells me I don't really like the girl I'm with, or something else. Really just anything to stop me from continuing the relationship. Now, I'm with a girl I can see myself marrying. We met through a friend and began our relationship via Facebook messenger before finally going out. The WHOLE time we messaged I had this nagging feeling that if I paid attention to it would give me physical symptoms such as sweating, and sometimes I can feel my heart beating in my throat. We've been dating for two months now and it's getting serious, but I want to shake this feeling. I really don't think it's her, if it was why would I have this nagging feeling before I even met her? It's like ever since that relationship I had years ago I haven't been able to be at ease with anyone anymore. Sometimes everything feels great, mainly when we are together. But as soon as we are apart I will obsess about this all day, and have this weird feeling like in my top left back kind of where my heart is. Sometimes, I get really anxious and my heart beats in my throat and I break down and think "Well maybe I just need to end it" because I'm convinced I shouldn't feel this way. That's typically followed by a few really good days, normally where we see each other a lot. I'm just sick of this. For anyone that's struggled with relationship anxiety, could this be that? Or am I just convincing myself I love her even though a genuinely feel like I do a lot of the time? It's all very confusing, and I'm almost convinced this would happen to me in any relationship now, because it never happened before that one serous relationship I had.