Help me with my negative outlook on relationships?

[LeoLioneye]

I'm a guy in my mid 20's and I feel as if I have the slow growing negative outlook on relationships. I only had a few relationships in my life some rather long, such as one I had for 5 years but ended pretty much mutually, and some shorter ones. My last one ended a little under a year ago but was only short (4 months) pretty much we both felt it wasn't working and wasn't really hurt by it since we felt the relationship was mostly for fun. About two months ago I did ask the one girl out that I had an interest in but she politely turned me down, this is when my out look on relationships started going down hill (I never was really turned down like her before in that I really liked her and she did seem to leave it open ended in that she wasn't interested at the time but one day maybe). I now feel that relationships are somewhat pointless and have no desire to pursue them, this is regardless if it is for love or lust, I feel even a one night stand pointless. I no longer have desire to masturbate either in that I feel even fantasying about sexual relationship or lusting for women just stupid and that by lusting for them I'm just empowering them by making me want them, the same way and drug addict wants drugs. I look at my friends in relationships and think good for them but I think they would all be happier with the freedom to do as they please if they were single and just don't know it. I even look at my father and think how much better off he would be if he never married my mother, he wouldn't have to please her, all the money he would saved from having no wife or kids, all the things he could have done in his life. I find my negativity to cause me to not even care to start conversations with women no more (other than family and close friends) in that I don't know them or really care to get to know them. I'm just starting to feel that love is nothing more than a load of bullshit and everyone is too dense to notice it. I just need help in that I know I shouldn't feel this way but do.