Whom can people trust anymore? For media addicts who get a constant feed of news, the knee-jerk response is probably "nobody." But what's the attitude of regular people who aren't scanning newsfeeds 24/7?
A therapist friend of mine once said that advice is the lowest form of conversation. I would go even further in warning that giving unsolicited advice is a sure way to erode trust and drive people away.
You may have to perceive trust as an inner knowing that utilizes your intuition, your knowledge and the knowledge of others. You have access to this knowing when you let go of your fear of not being enough or having enough.
Great sex is not simply a matter of all the parts working properly and having fun with a willing partner. There are components that make erotic encounters really flow at all levels: physical, emotional, spiritual.