[Estanatlahi]

I'm in my mid 20s (female) and I've never been in a relationship before. (By this I mean any kind of relationship really.) I've had some struggles getting to where I am now, but I feel like I'm moving forward with my life successfully in almost all areas other than in relationships, which I seem incapable of. It's not as if I want to stay alone. I yearn for someone I can rely on, care for wholeheartedly, and maybe have a family with someday, but I just can't seem to follow-through. I feel like I've put it off, and avoided it so long that I'm borderline phobic of approaching a man or being approached by a man that way. The one time I went to lunch with a man we had a good time talking, but once we parted ways I was so relieved. The couple of times I've been approached relief is what I feel when I manage to get away. I'm rather concerned because I may not show it, but I am literally scared when I think about approaching a possible love interest. I'm just trying to figure out how I got to this point, and how I can climb up from this rut.
I've thought about trying one of those online dating sites, but I feel hesitant even about that.
Any advice would be appreciated.
T.