Conflicted about love

I hooked up with a college three years ago, got pregnant but miscarried. He k ew about the baby, but we stopped talking for a year then talked a little. Then I moved away and fell for him as we started talking more.

Then we met up twice, as friends.

Now I am dating someone else, its serious and I love him and we are planning to get married.

But I can't get guy one off my mind.

What do I do?