Hello Rumi
The fact that he is willing to give his gf probation after she went with someone else says enough, he is still in love with his girlfriend and is willing to work thru their relationship, I mean if he wanted to leave and be solely with you he would have done so…I would seriously think of walking away from this situation as he could probably be hanging around with you to forget some of the issues going on in his relationship. One year is a long time for someone to be making their mind as to what they want.. If this guy truly cared about you he would have Left his girlfriend by now.

You deserve a lot better, and finally what he is doing now, dating you and his girlfriend at the same time, don’t you think he will do the same to you in the future if you are in a relationship with him?

Regards

Kadija