I find it really hard to cum with my boyfriend. I can do it at home alone but with him, it's very rare. I find my mind is over thinking during sex. He gives me oral and I've only ever cum once when I was totally relaxed. Other times, I have to touch myself to make myself cum with him but this doesn't always work. He always has a great time and is very patient with me. He says to just forget about it and it will just happen but I'm worrying as he's the only man I want and I don't know why I can't relax.