why is that bad? i think its sweet. Does it always have to be a sexual thing?

One of the biggest misconceptions, showering with your partner is mostly just that. One person standing back in the cold handing the other one shampoo and conditioners and what not.

Which hair?

I think there is bad communication happening here. Try the blatant approach and tell him you miss the passionate and loving showers you used to have. He may not be aware of how much you like them and that they make you feel closer to him.

I can't stand showering with someone else. it's my only time to be alone.

3 months，it’s hard to imagine ...

it doesn't always have to be sexual OP, though there is no reason that you couldn't turn this situation into what you were wanting it to be

That depends which type of.... hair.... he was asking you to wash....

showering together is overrated anyway

After a year of living wth my boyfriends parents, we finally got our own place and I thought he's be all over it. Nope. He took one shower with me after 7 months of begging and he hasn't seemed interested since. Sorry OP, I know how you feel.