I can't answer the denial question because I do not know you or him or what he has done specifically, if you are talking about watching porn or if you are talking about a physical affair. I also do not know if you are married or not. I would suggest that you let him know how this hurts you (whatever it is) , and what he does with that information will tell you a lot about if it is love or not.

Love seeks the highest good of the object of one's concern. One can learn to love, of course, if they do not know how already, (and most do not) but that is up to the person as to if they want to or not. You both may want to schedule counseling to work through this. Either way, I pray that love is learned by you both and that you both allow God to lead and to guide.