<human>: Could you distill the essence of the text into 1-3 sentences?

My boyfriend doesn't want to be with his wife anymore and had already decided this and started the break up process before we started dating. As with all these situations though its turned out to be a long drawn out break up due to lots of complicated circumstances. 
The thing is I think his parents blame me, as though he left his wife FOR me. Which isn't true. 
Is there anyone with advice on how to go about making sure this gets across to them, his family is really important to him, and family is important to me so I want a good relationship with them.
<bot>: started dating someone during their break up, I'm worried I'm going to get the blame for the  relationship break down.