Funny, my boyfriend and I are in a similar situation! I just recently purchased a 2018 Trek FX2 hybrid (women's). It's my first "real" bike. I know it's a fitness/commuting entry level bike, but let me tell ya I'm in love with it! I figured I could upgrade next year to a true road bike if I want to go that route. Anyhow, my boyfriend currently has an Iron horse Sinister 6.3 mountain bike. Yesterday we went on a 10 mile ride, and he just couldn't keep up at all. He was exhausted and cranky on the way back home. I know his bike is alot heavier then mine. I have an aluminum frame, but I'd like to try some carbon frames for my next purchase.
I also wanted to note that I had a wonderful experience buying from my local Trek dealer. They were so friendly, informative, and professional. I took my boyfriend there the other day, because I'm trying to talk him into purchasing a hybrid that's similar to mine. My longterm goal is to eventually have a bike for every purpose (road, fitness, trails, and winter riding). I vote Trek OP!