 If you liked
Virgin na Kankei
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 ...then you might like
Ring x Mama
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Both are borderline hentai where the male lead has affairs with other women.
The difference is that in Rin X Mama (Ring X Mama) the male lead is a likable guy and that his affairs are usually known to the main female character and its ok with her for some reason and even often has threesomes or more with him and multiple girls while in Virgin Na Kankei, the male lead is simply an unfaithful and unlikable character who lies and keeps on talking about how much he loves his main love interest while having sex with some random girl he just met