I am 22yrs old. When I was 17, I used to go out with a guy, but it only last for a shot period. He had met another girl. He started to act strange with me, one time he even broke up with me and he came back. I was blindfolded and I never knew what going on. Later on he confronted me that he is in love me and another girl. E got to know that he has been played by that girl, and she only wanted to separate me from him. That girl did not loved him at all. And he asked me sometime off so he could settle things with the other girl so he could come back to me. I got to know that girl had threatened him to stay with him though he wanted leave her. Eventually he got a chance to get rid of her.

It was a very painful memory to me.I was so angry knowing he lied to me and I was fooled. knowing that his been cheating me all that time. After a year the high school ended and we both moved to two different countries for our college education. He still keep in touch with me, he called me, and he even chatted. But I avoided him as much as I can, because I was so mad at him. Aside from the distance, he still needed a second chance. But I was so hurt. I loved him all that time though I avoided him. I wanted a proper explanation which he didn't give. Probably its because of distance we had.

I met new guy, 2yrs back. Who loves me more than I could ever ask for. I have not experienced it with my ex. The least thing that I want to do is hurt him. He want to have a family with me in the future.
So I'd decided to delete my ex in my contacts and in my social network account. I don't want to mess my new relationship because of my past. I moved on.

I got to know my ex found another girl as well. But recently he contact me again, and he said he still in love with me, and that he is hurt again with his girlfriend. Thought he doesn't want to bother me, he just needs someone to talk too.

I could talk to my ex as friend, because I'm happy with my new relationship.
My problem is should I tell about my ex to my boyfriend? I do want to tell him... but I doubt what's his reaction will be? I have not hide anything from him before.

Tell him your ex might come and try to wreck the Relationship so the earlier the better

Tell him you have talked to him but there is nothing to worry about. If it bothers you that much you can just stop talking to your ex. That may be the smart thing to do.

Tell him you have talked to him but there is nothing to worry about. If it bothers you that much you can just stop talking to your ex. That may be the smart thing to do.

Thanks for that piece of advise. It really does bother me a lot.
When I finally got rid of that painful memory and now he is back again, telling he loves me yet he doesn't want to bother or ruin my relationship. He wants to be my friend because he is hurt with his current girlfriend and needs somebody to talk too.

I definitely know, that I do not have any feeling for my ex anymore. But I do care because he is hurt. If my ex needs someone to talk too, I could do that for him.
But I don't want to ruin my relationship for that.

So how will I tell it to my boyfriend... and what should I tell my boyfriend?

Break off contact with your ex and don't ruin what you have. Don't answer his calls, don't text him, don't email him. Let him be and remain a ex.

Your current relationship should be the most important
Your ex is already disrupting your relationship. Tell him you cannot be his friend. Tell your current you had been talking to him but you're not any more.