I've been in an exclusive relationship for 3 months now. We'd both been alone the previous 4 years, so it's a big deal that we've met each other. We see each other 2-3 times a week, speak and message every day, he says how he misses me, can't wait to see me etc. He definitely isn't with anyone else.
As he's part of my life and I'm happy to have finally met someone, I've mentioned him to friends, family and colleagues. However, absolutely nobody from his side knows I exist. He has a teenage son who I've not met, but I've heard him call, "I'm off for a couple of hours with my friend" - not girlfriend. He said he and his friends don't talk about who they're with and that his mum would ask him questions. Other than being 12 years older than him (we are both middle-aged), I feel I have everything that would make me a good catch in any parent's eyes.
I know it's only 3 months, but I'm finding it a bit odd that I don't exist. He claims he's not embarrassed by me, so am I concerned for no good reason and should just chill out?