I'm divorced but I did learn some things so please take this advice.

1) Be best friends...if you can't be friends then you can't be more than friends. If you are best friends then that's as good as it can get.
2) Be honest at ALL times and about everything. One little lie can reduce trust in the friendship
3) Don't try to control one another. If he/she does somehting you don't approve of then let the other person know but don't say "No you can't do that"...within reason of course
4) Be creative in the bedroom, bathroom, kitchen, back seat of the car, etc.
5) Do things that teenagers do like getting it on in the high school parking lot or in the dressing room of a local clothing store.

Last but not least...play video games together :)
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