What does what ever happens happens mean? ( need a manslator)?

There is a guy i like and we y flirt alot. Well i decided to be a little risky and ya snt him a bare backside (w/ panties!) pic to his phone. Of course he was like thats hot (ER just didnt show the goods back!) ne way i made a joke that he knows he wants me.. n lol then said sorry for being so aggesive he said thats fine he doesnt care and that whatever happens happens?? wtf does that mean? Also let me add we did kinda crash together but NOTHING happend not even a snuggle.. I do like him but idk i guess its gonna end up, us just hookin up but im not sure exactly what he means....