Is it recommended to have intercourse during sex play?

Maybe. Are you ready for sex with this person? If so, go ahead. If not, why are you having sex play with them? Are you trying to decide if you want to have sex with this person? Do you have protection? Birth control? Will you be devastated if you have sex and later wish you had not? Will you feel bad if it turns out to be a one night stand? There is no medical answer. Do what is right for you.