Well....

I think love and sex are two different things but with a close Interface. For Kirishima love is more like an emotional obsession/bond/understanding while sex is a means to the end. He doesnt imply love with sex thats why I think he still can love a person but sleeps around(in my opinion). Thats not the "normal love" that common people want or experienced, but HE IS NOT normal. And WE ALL KNOW that Yoshino gives zero fuck and just because some ppl here who cant handle this "cheating and stuff" and cant understand that this manga is not a shoujo romance slice of life shit they say that this is too much and dropped it ...damn guys this story is so interesting and every character unique af, I read a lot of mangas but this one is really something different and its a shame to drop this, but its just my opinion ;D