I don't want to turn my relationship lustful what should we avoid doing?

Flee temptation: Focus your time together on fun, recreation, other mutual interests and do things in groups with other friends. Avoid being together in private late at night and intoxication or other things that lower your self-control. Remember that your partner may feel mixed messages if you engage in heavy kissing, petting, etc. Be clear about your wishes in this regard and ask your partner to respect them.

OK: Let's get to the causal level.Evaluation from well trained psychiatrist.