<human>: Give me the gist of the text in a nutshell

The other day I decided to use my fiancé's shower gel while showering as I had none myself. I figured it would be okay given that a) we have a pretty open relationship, and b) he uses my fruity shaving gel and shampoo on a regular basis without asking. 

I mentioned it to him in passing afterwards that I had used a small amount (shower gel goes a long way, and he has a huge bottle of it) just to let him know. Well he starts acting like a 5 year old, whining about how it is his shower gel and I can`t do that, blah blah blah. 

So this time around I used his shower gel and don`t plan on mentioning it to him. In fact, I think I`m going to use it every time he now uses my shaving gel and shampoo.
<bot>: Look at your man, now back to me, now back at your man, now back to me. Sadly he isn`t me, but he could smell like he`s me. Old Spice, now made for a woman.