It is not a question of being worthy.

Backtagging: Totally already with this.
Threadjacking: No problem.

Fourthwalling: Also okay with this.
Offensive Subjects: I'm generally alright with just about anything, but if you feel like a subject may be particular problematic just let me know before hand.
 

Flirting: Go for it.
Hugging: By all means.
Kissing: Sure.
Fighting: Gaius loves the fighting.
Injuring: Minor injuries are always alright, anything more significant I'd like to have cleared first.
Killing: Basically the same as above.
Telepathy: Fine with me.
Shipping/Sex: He's a difficult character to really develop this sort of relationship with, but I'm totally fine with it happening if it does.