dulces: drugs
chupa ya roc: I have no idea. I do not know everything, but something tells me something is not well spelled here. Perhaps I am missing more context.
parchar: to hang out
liga: more context is needed, it can be many things and all of them with sexual connotation
morboso: it is not easy to translate. "morboso" is someone very engaged in the interaction, passionately kinky and sinking into anything. It can be just vanilla sex, but very passionate. Dirty talk is not a must, but it is usually involved.