No science make of it, but take it literally - No expectations: who is dating an unbiased experienced more Honesty - Tell clearly what you are looking for and what not - Discretion is a must: be silent and enjoy Casual sex without emotional attachment and relationship drama - Get off the couch, get out to full life, and have fun Informality. Casually. Permeable. Let your feelings out in front - Do not trust your gut feeling, rather than to censor it through the filter head If both want to get involved in a love: Do it! - No permanent solution, but charming bridge option