Long term relationship

We have been married 8 years we have two kids he took my verginity and I ended up pregnant we got married he was 19 we do. We are have our problem like any marriage but I do not feel attracted to him anymore but I do love him and we have this other guy who stays with us and I am so attractive to him him it drive me crazy but I would never upon my desire. But I feel I shouldn't hurt him or lead him on either and no one knows I have feeling for our roommate .