@Susanr1988,
you were both in relationships, became interested in each other, broke up with your partners and are in a quasi relationship now
time to clarify - by talking very directly and openly - if you are both in an exclusive, committed relationship
it seems from what you've posted that you are - and he is not (at least not in a committed relationship)
talk it through really really openly
consider suggesting you go to couples' counselling together
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you got into this relationship while you were still in another relationship. that's pretty much going to lead to messiness, one way or another