Someone said something to me today that made me think.
"I don't want anyone to have the ability to upset you"
Funny you should say that, I would consider it completely necessary. If someone has the ability to make you truly happy don't they, by definition, also have the ability to upset you, simply by withdrawing whatever it was that gave you joy. That's the trust isn't it? It's saying I know you can beat me at Chess, but I'll still play, and if you asked me I would even let you win, but I know you won't ask, and I'd prefer to lose anyway if that's what is required.
If you never lay yourself truly open, you can never really be reassured. Of course it's a gamble, but anything worth anything always is.
I don't, incidently, think this is what love is remotely.