Why do I have such a hard time with love?

I always pick jerks, or I end up liking someone who ends up taken already. I was ready to give up on love after I got harshly dumped last year by my so-called fiance and was left jobless, etc. Here I am a year later, and I was actually starting to be happy being single. Then, I met a great guy at work. I have to co-teach some of my cles with him. I have known him for a little over a month. I know he is a good Christian man and I thought I finally found someone I could get closer to. He has been friendlier with me lately...BUT this morning I came into work to find out he is absent today, because he took the day off to go have wedding photos made. So, I strike out at love yet again. I guess God wants me to be alone for the rest of my life. I was so happy I met a Christian man who is not a player that I thought would be good for me. Then I have ti hear he is marrying someone. I can't tell my coworkrs the truth. I have been crying all day and feeling sick. I even had to miss a cl. I want to go home, but I don't want to b alone, so I am forcing myself to stay at work. How can I face this guy when he comes back to work tomorrow? Last week, we had a moment, and I was so sure we had chemistry and that we would end up dating. Now, I get to be an emotional wreck and lonely AGAIN.