Dude this is not a p0rn site.... and how exactly is your question suppossed to spice things up when it's sooooooooooo boring...?!
You didn't have to ask it if we didn't want to answer it!
ermm i like mixing it up and not sticking to one position :L
cowboy or reserve cowboy position? great for a girl as she can set the rhythm - that' said I do love it when my boyfriend has his way with me sometimes!
Both but it depends on her mood.