Backdating: THIS IS ALWAYS OKAY.
Threadhopping/jacking: Sure!
Breaking the 4th wall: ... Probably not a good idea with this boy. orz
Hugging: THIS IS ALWAYS OKAY, just don't mind him derping for a bit before he hugs back. Especially if you're a lady. Unless you're Aqua, then yeah, bro hugs forever.
Flirting: IF YOU DON'T MIND FLIRTING WITH A WALL. Okay okay, no, he would. Probably catch on eventually. And then derp some more. Depending on how well he knows you/his relationship with you, your mileage may vary.
Kissing and/or other intimate actions: SEE ABOVE.
Relationships: Sure, it might take a bit of work, but ask me and we can work something out!
Violence: Brawls are coo' with me. Keep in mind this kid can hold his own though, so challenge at your risk. Pokeyman battles are always okay.
Killing: LMAO WE CAN'T DIE?