Girlfriend feeling insecure

So here's my story.

I'm now 21 years old. Four years ago one of my friends started going out with this girl (she was a year younger than us both), but things didn't work because he was being too jealous and possessive.. So they broke up. I had always had a thing for her, but couldn't make a move since he was my friend and everything. So I waited for half a year. After that her and I got together and my friend stopped talking to me. A real teenage drama, eh? This also didn't last for a long time.. Mostly because of my friend.. Everybody kept telling me how I "let a girl come between us". I was pretty young and didn't know better, so I ended the relationship.

During these four years the girl and I have kept in touch and even went out a few times, mostly on her initiative. I still liked her a bit, but I didn't really want to get seriously involved with anyone at that age. I had my share of fun with various girls and finally decided I wanted a long-term girlfriend. So one thing led to another and after four years we got back together.. And I felt true love for the first time. Apparently, so did she. Things went great during the first two months, but all of a sudden she told me she was unsure of her feelings. During that four year period she had several failed relationships and would always come to me for advice and a shoulder to cry on. We were really good friends during all that time and I knew she wanted more, but it took me a long time to finally get back together with her.

Now, we've always been very honest with each other, so I know she isn't seeing anyone else. She says she can't explain it, that she knows she's being unappreciative and that she'll get over this insecurity, but it aches me that there's nothing I can do to help. Or is there..? She also says she's afraid to really fall in love as I might dump her a second time.. I wouldn't do that for anything in the world, but there's no way I can prove that but by being with her. There can't be any routine after only two months.. Things are going great, I try to cater her every need.. What can I do? Since we go way back, I really think she's the one for me, how can I give her reassurance and help her fight this insecurity?

hi mcove, welcome to the forum

I think that getting back to her after 4 years should be more than a reassurance for her. if you wouldn't love her, you wouldn't get back, right?

You can do absolutely nothing else than keep on reassuring her and be there for her. It is her that has to start feeling confidence in the relationship and that is sometimes very hard for a person when having been disappointed several times.