creepysusie

Ask yourself: Who hasn't been in a relationship where something goes wrong and we hurt the ones we love?
Don't feel guilty about the past, which is something you have already done. The past is the past.

As for his parents, you are not dating them. We have all heard of the cold mother-in-law jokes and they exist for a reason. Not everyone is meant to get along. Relationships between two people are already full of worrysome details and minor strifes. You already have your own problems (in a figurative, "everyone's got something on their mind" kind of way, not that you actually HAVE PROBLEMS), don't worry about everyone else's.

If his family does not warm up to you, consider it their loss because you are a bright, young and interesting woman

EDIT: Genuinelygirly has some really good advice.