<human>: Provide a brief overview of the text.

Boyfriend (m/22) and I (f/19) have been together for four years and have 6 month old son together.  My boss (m/25) Is very interested in me "having me" were his words.  I think this may have inspired what bf said to me.

So the other night we had put our son to bed like usual and decided to shower together. Earlier that night we had a date night of sorts. I took him out for lunch, he dropped me off at work and picked me up, we went to a drive in movie and then to waffle house.

While in the shower he says (out of nowhere) "If we ever breakup and you have a new boyfriend that you're living with, and (our son) is old enough I'll tell him to tell everyone that (new boyfriend) touches him."

I was outraged, couldn't believe he had just said that. Not only is he the only guy I've ever "been with" but I'm the only girl for him. He was my first reaL relationship and I his. 

I do t understand where this came from or why he'd say it.. he later said he was joking, but still. Am I wrong to have been this bothered?
<bot>: boyfriend said if on the future I get a new boyfriend he'll have our son tell everyone new boyfriend you he's him. I was livid, am I wrong to be upset?