Is it possible to trust him again?

My ex boyfriend left me for his ex wife,10 months ago.we were together for 7 years.,lived together for 4yrs. Why he left me,I will probably never know.we had the perfect relationship.actually many people thought we were married.we never argued ,the few disagreements we had were over quickly.he kicked her to the curb 3 months ago.a situation made it necessary for us to be in each others company.I hadn’t seen him in 6 months.we talked a bit, for a few weeks.we started to talk more and more. We have seen each other several times between now and then.we have kept it between ourselves.I loved this man so much,I trusted him with my life ,as he trusted me with his.I had so much anger and rage towards him when he did what he did to me.I feel that love is a much more powerful emotion and usually wins out in the form of forgiveness even for the most dastardly deeds imagineable.I don’t believe I ever hated him,I hated what he did to me. We did have a lot going between us,there was absolutely no clue that this was going to happen.he loved me one day and ditched me the next.it nearly destoyed me. Our children( we have none together),7 between us. There is a bond there and a history.our dgtrs have continued to hang out together through all of this.they all think that it is great that we are “talking”.I truly want to be able to trust him again,like I once did. Do you think this is possible? I know that it will be a lot of work on his end.definitely not on my end.I asked him the other night “do you trust me”. His answer was,”you have never once given me any reason not to.” that is absolutely true.I would really like some feedback.