You can have sex without love, for fun, for pleasure.
You can have love without sex, with deep feelings, where sex is not needed for this kind of relationship (although sex is needed for mental equilibrium

)
You can have both, building a normal relationship.
I must agree on mane's POV about men & sex, we all want sex, for fun, pleasure, anything else, there's much purposes to sex. But, you present us as if we don't look for affection too, and, as a result, let think guys are only for sex, girls only for affection marks.
I'm not sure there's such a difference between girls & guys, we all seek sex and affection, but we all have our ways. Part of the ways cames from education et inheritance of past behaviors, other parts came from our inner animal instinct.
Whatever, sex & love in relationship must be protected, ehanced and cherished