No spark

Please help. Me and my DH are going on 8 yrs married and 10 yrs total. As of well a while but especially the last couple years I haven't really felt a spark with him. I still really care for him and don't want to leave him but I'm not "in love" with him. Part of it is me having a hard time letting go of him having an emotional affair with someone I once considered my friend. We've been to counceling and it's been over a year but the hurt still resides in its dark spot on my heart. Our marriage is far from perfect and it's not all his fault. I don't know what to do