1 Idea is not ineresting, but not yours :D
Yours is quite good, the only thing I doubt- the friend can recognize you earlier than you want him to do it.
2 Why don't you want to play this trick on your boyfriend? Aren't you sure he'll stay indifferent to this seducer? It could be a good but dangerous way to check his loyalty.
4 My imagination tells me another good variant of the appearance. There are a lot of different devices to change your face in the shop. I suggest making yourself older as mach as your fantasy lets, and come to tell himof her about your love and hot desire :) Very good method to check up a moral fibre, isn’t it? :)
1 Idea is not ineresting, but not yours :D
Yours is quite good, the only thing I doubt- the friend can recognize you earlier than you want him to do it.