Is it normal for me to feel this way?

I'm married, and have had little to no life with my husband. Back in February, I began chatting online and met someone. We hit it off, have talked, emailed, and met in person a couple of times. At first it was just a ual relationship, then developed into a more emotional connection. Although neither of us has said anything, I know we really like each other. I did have ual relations with my husband, and found out I am pregnant. I have continued my relationship with this other man, only because I've enjoyed him so much, he has been incredible and the more I've talked with him, the more I have liked him. I'm not in love with him, but I really, really like him. But, I know in my situation...being pregnant, married that nothing can come of this. So, I told him I can no longer communicate with him, and that I have to let this go. I don't know why, but I feel so saddened by this choice. I actually cried over it, like we broke up or something. I know I'm going to really, really miss him. Is that normal?