Why would an adult male play such silly games?

2 years ago my husband cheated ending my marriage. I met a man 9 months ago. He was loving & understanding.seemed besotted by me.one night he said do you want to have a baby with me. We had unprotected . This happened twice. When I told him I was pregnant he was surprised and said he had withdrawn before he came. He asked me to have an abortion.I miscarried. We cont.. to see each other but I was emotionally up and down. He wasnt understanding. The other day he stopped contacting me and has completely ignored me. Although knowing the relationship was wrong for me. I just wanted some kind of dissusion about closure. I sent a couple of emails I tried to be very polite & articulate even when discussing my hurt. Being sensitive this has really hurt me.the silence is just horrible. My trust of men is at an all time low. Why would someone who seemed so in love be so cruel? How do I overcome the mistrust I feel?