Well I have some personal beef with belief in fate but I'm not going to go into that.
Don't resign yourself to anything. As soon as you accept that you'll be alone forever you will be, so the thing to do is to live in the present. Life is chaotic and sometimes you have to go with the flow to truly live it. Sometimes people find love on their first try, sometimes it takes a while, everybody's experience with life is different. Your friends lives are nothing to judge your own on, just take the chances that come, and if you're not liking the ones you get, you have to make some of your own.
Just please, don't resign yourself to loneliness.