I played with them: now I need their forgiveness

By the grace of God I'm an academically buoyant. I use to teach students "English Language". My young age and manner of teaching usually attract girls to me... There are these 3 girls that are friends but I was oblivious of that. They began to develop some feelings towards me individually and even sending me messages. As time goes on I began to reciprocate the feelings. These 3 girls are very beautiful. I was confused on whom to choose and the pressure they are mounting on me was so much that I can't reject any of them.

The relationship lasted for about 2 years. Just few months ago I gave my life to Christ. I summoned the girls and told them that it's all over. But I told them this not simultaneously. When the girls sat together discussing their "Boyfriend" who called them to tell them that it's all over, they were surprised that the same ordeal happened to them the same time. The truth came to lime light when they discovered that I'm their boyfriend.

This girls refuse to forgive me and now I'm a preacher. What do I do?