Boyfriend kissed another girl while we were on break, I forgive him, but am having trouble trusting him.

Anonymous
My boyfriend and I have been dating for two years and recently things have taken a turn for the worse. Differences in spiritual issues began to come to the forefront, and we decided to take a break for a while. We are back together now - towards the end of our break, he had a talk with his pastor that changed his mind. A few days into our re-started relationship, he revealed to me that he had kissed another girl about two weeks into the break. This is an issue with me - save for one or two days, we still exchanged "I love yous" throughout the entire break in the relationship.

Now I feel betrayed and hurt. We talked about what happened, and I explained to him that I don't think people who are in love kiss other people. He feels he did nothing wrong because at that point, he says he didn't believe we would stay together. He also says it didn't mean anything. In addition, this is something that may or may not be worth mentioning: I've suspected this girl has been attracted to him for a while and have told him so. He said nothing was going on.

I forgive him for this, I really do. But I'm struggling with a little bit of internal conflict here - I love him dearly, and despite the lack of trust I felt... I found that I still wanted to be with him. The major upset for me is his unwillingness to accept responsibility for this situation. He says he wants to re-establish trust, but he's made it clear that he doesn't think there should be a reason for me not to trust him. He says he will not do anything to put our relationship in jeopardy again, but now that we're back into the relationship, I still find myself thinking about what happened and am unable to feel completely at ease with him and his female friends.

Any advice/suggestions/comments?

Updates
+1 y
Forgot to mention... the point of our break was to work on our own spiritual issues.
Boyfriend kissed another girl while we were on break, I forgive him, but am having trouble trusting him.
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