I am thinking I may be way off here, and tbh I am a suspicious person generally. I worked in a male dominated environment for years and I saw the most unlikely men be unfaithful so often, I don't think anyone is immune to it given the 'right' circumstances. Have to say though, I don't accuse my DP or anything, I just am probably more suspicious than most.
Anyway.. DP (together 15 years, we have a DC and I have an older teen DC from previous who lives with us) walks his mum's dog for her every night. This has been for years because his mum is in quite bad health and goes to bed early and the dog needs out. He sometimes walks it during the day as well.
We live a few minutes from his mum so it's easy. It's on a route which me or DC may have reason to be walking down too - not likely, very occasionally - but we may have reason to walk there to go to a certain shop and my DC has a friend who lives there she would walk that way.
DP used to always make a point of how he hates all the connected-ness of technology and made a point of not bringing his phone whenever he was only going out for a short time.
Around 4 months ago he started bringing his phone when taking the dog out (it takes 15 mins and he never had brought it before) and started calling or texting me when he is out with the dog and keeps asking "what are you doing?" or "what are you / DC up to?" . It's literally most of the times he takes the dog out he will call and casually ask what we are up to.
Granted, often I will have just got in from work when he is out so he hasn't spoken to me all day, but it's just the change that is weird.
It feels a bit like he is calling to check up and make sure we are not going to be walking that route.
I don't know if I'm reading too much into this, but things haven't been great between us for about 8/9 months too. More arguments and a feeling of disconnect.
If you've got this far, I'd really like to know if you think I am just being paranoid or what?
I know I should ask to go with him, or go 'to the shop' or something. I did twice and nothing untoward, but that's over months and months.