When I live with someone we normally shower together, I just say "I'm going to take a shower now..." and he stops whatever he's doing and comes with me. Also, I normally only have guys say I smell good on the days I forget to wear deodorant...one of my boyfriends would actually shove his face in my armpit to smell me, awkward, but there you go. These days I don't often forget and I put on prescription-strength deodorant twice a day because I have powerful sweat...and don't like having wet pits. Most guys, and there are exceptions, despite their joking around with friends, like the way women's genitalia smell.

As for my hair, I only wash it if it feels dirty, normally every other day--I do shower daily though, I just won't use shampoo on my hair unless it's dirty.

Also, showering multiple times a day without doing some sort of extreme physical activity can be really bad for your skin--it can cause pimples and dandruff and things like that because it will either dry your skin out or cause it to overproduce oils

As for trimming hair, I only do it if it starts to bother me and I only shave completely as a VERY special treat because it's really uncomfortable to me and I feel like I have an open wound in-between my legs that requires constant maintenance

But really, I don't do anything I don't want to do even if my boyfriend asks for it--he may look at it for like an hour a day, but I have to feel it and see it 24 hours a day everyday and I'd rather my body be comfortable and low maintenance.