Something just feels ‘off’ advice please

[Butter194]

So my partner of 10+ years and I are going through a hard time and things aren’t looking good for our relationship. Anyway I do trust him and have never felt the need to look through his phone etc.
So my day off the other day I asked him if he’d like to come on a specific beach walk with me and he says no he didn’t want to and that I should go on my own blah blah, like he’s trying to avoid going with me.
Cut to the next day and I get home from work and his car has moved so I know he’s been out, I kindly ask him where he went for the day as I know he had to run a few errands etc (I generally didn’t mean anything bad by this either I was just wondering)
He then said he went for the beach walk I wanted to do the day before. I felt really hurt by this because why can’t he do it with me but went on his own?
He then got super annoyed saying why am I checking where he’s going and it’s weird etc. but I actually wasn’t. I just wanted to know if he’d had a nice day and what he got up to.
His reaction to the conversation is what’s made me write this post as it was so bizarre.
thoughts please!!

So my partner of 10+ years and I are going through a hard time and things aren’t looking good for our relationship.

What else is going on because him changing his mind about a beach walk isn't a hard time.

I get it. He’s trying to emotionally avoid you somehow.

He's trying to avoid you and picking fights. My guess is he wasn't on a beach. He sounds really defensive.

Is this an isolated event? Because there’s really nothing wrong with wanting some space and alone time in a relationship. I go on solo trips and out to eat by myself from time to time in a relationship. Never been an issue. I would feel suffocated if a partner objected to it.

Weird. Why would he do that? One thing I have learned is to trust your gut instinct. I kept dismissing mine but it turned out to be right.

I don’t understand why you’re confused OP. You’ve said yourself you’re not getting on and things aren’t looking good, I wouldn’t want to to for a walk with someone I don’t enjoy spending time with so it makes perfect sense that he didn’t want to go with you

Did YOU go on the beach walk solo ?

Sounds like he just fancied a walk by himself.

Me and DP get on fabulously, but I still quite often go for a walk without inviting her because I fancy some time alone.

If you’re not getting on, why would you want to go on a beach walk with each other? He probably wanted to walk alone.