Would you take your boyfriend back?

we had been together 4 years and i loved him to peices. one way or another i found out he was on a swingers site and was sleeping with women twice his age and was bringing them back to the house when i was at work.. i found out i was destroyed and really hurt. we broke up for about half a year but i found us back together. i love him to peices and he is such a changed man and i feel so at ease and happy with him...but is it really wrong i took him back? it hurt but i do love him and i know now he loves me and when i found out he realised how back it was. we have been back on for a year now and im happy but sometimes i remember what he did and i feel sick