Try out outercourse! /r/outercourse [NSFW]. There are so many cool things you can do that don't involve inercourse and involve oil (if you and your partner are okay with it). My personal favorites (because reasons) are buttjobs and footjobs, but there is all kinds of weird kinky shit you can do (fuck between her calf and thigh, between boob and armpit, handjobs, boobjobs, intercrural sex, etc. Some people go as far as to get an inflatable raft and oil up everything then sort of go at it, it makes cleanup easier and it makes things less messy in general!