If it wasn't clear, I do believe Marco had lots of experience.
He had 16 years with Hekapoo and Brunzetta, fighting, questing and working his body out, he surely had tension to deal with. I have to add, we all thought Marco was dancing on H-poo's finger but when night life ep. came we saw it was the other way around.>"Pretty please H-poo"
Then he returns, he is dating Jackie, they are both teenagers, she is thicc and well curvy, not to mention her thin shorts.
That other anon has to be a total cuckfag to believe Marco was a virgin as the anon pointed out.