Now I'm Calmer

Now i've calmed down I can follow on from my earlier post.... Today I decided I would log onto the dating site I met S on. I get constant emails from it which are annoying so I wanted to see if there was a way I could delete my account. While on there I thought I would have a quick look at the pictures on S page. Now deep down I knew this was a bad idea. What if I saw something on there I didn't like? So anyway I find him and in the last week or so he's added a new picture of himself. My stomach literally dropped. To me it was quite clear. He's still an active user on POF. Now i'm sure you're all thinking what's the problem, you're just dating. And you know you're totally right on that count. We are just dating, I have no rights to tell him who he can see, talk to etc. Doesn't mean it didn't bother me. I'm insecure at the best of times but the thought of him talking to slimmer girls, prettier girls, funnier girls, possibly meeting up with them really bothered me. Naturally I told him what I came across and how it made me feel. His response was interesting but basically he enjoys the attention. Seriously wtf. Do I not give him enough of that? He went on to explain a few things which I won't put on here as that's his personal business but still my head was all over the place. I know we're only dating and maybe I didnt have the right to pull him up but I am not comfortable with dating multiple people and I don't want to be involved with him if thats what he's doing. I don't want to be competing for his attention and affection. I don't want to be wondering if i'm second, third, forth etc best. I don't think that's being unreasonable or anything. It's just not something I want and actually yes, I do think I have the right to feel that way. So I basically said all this to him. That if he wants to date other people thats fine but tell me now because then i'll stop this and back off before I get hurt. He says to this that he's not dating anyone but me and he has no intention of doing so. I don't know how to feel if i'm honest. I am hurt, i'm upset but then on the other hand he hasn't done anything. He's not my boyfriend. If he wants to remain on a dating website then who am I to tell him otherwise? I guess i'll have to deal with that and accept this as one of the downsides of dating :(