I don't think they mind at all if you love them both/all. They know they each have a special place in your heart and can give you something the others can't. Heck, I was recently riding my old Trek and he selflessly told me that I needed to move the saddle back a little on my Colnago. Just a small change and I'm riding so much stronger on the Colnago now. I love the Trek even more for helping me out like that especially since it means I may ride him less often.