Should I keep waiting or get in a relationship?

A few months after breaking up with my boyfriend of 2 years, I met a great guy called Alex. Because of things that have happened to me in the past, I don't really open up to many people but Alex and I hit it off straight away and started talking everyday and seeing each other very often. We both developed feelings deeper than a friendship but I told him from day one that I didn't want anything serious because I just got out of a serious relationship. He always said it was fine because he was so in love and he'd wait till I was ready. So, we'd been casually taking it slow and seeing each other for 7 months (nothing too serious) and last month, he said he still loves me but he can't wait any longer and told me to go experience being single and have my fun because he knows that's what I want. I miss him like crazy and don't know what to do.

Because of the things that have happened to me in the past, I don't really have a close circle of friends so I can't distract myself or go out and enjoy the single life much.. so, although i often feel like i should enjoy being single for once and try to make new friends and broaden my horizons, i don't really get the chance to so sometimes I feel like there really is no point being single, so I feel like I'm stuck. What should I do? Any advice would be greatly appreciated.