Buttercup is correct. “Make love” has acquired sexual connotations. Alas, for those bygone innocent days–immortalized in numerous black-and-white movies–when it only referred to courtship behavior. (“Why Humphrey, are you trying to make love to me?”)
What other slang terms for full penetrative congress are the kids using nowadays?
Doin’ the nasty
Slipping s.o. the salami
The horizontal lambada
Fancy a wit’le rumpy-pumpy, love?
On the other hand “jazz” and “rock-and-roll” have made the reverse journey from sexual slang to wholesome cultural vocabulary.