He’s a 26 yr old ex squaddie?
That and his behaviour says to me it was the thrill of the chase, he was never interested in you beyond sex and “not the right time” is a way to try and keep you on the back burner - if he hits a dry spell and is horny he can say he’s “now ready” to get into your bed again.
I’m the daughter, granddaughter and ex wife of squaddies, not all of them but the vast majority are frankly shag hounds! Especially in their 20’s!
It’s why I made my ex wait almost 4 months before we did anything more than kiss, I was very wary about getting involved with a squaddie (rightly as it turned out) and made it clear I wasn’t just going to be another notch on his bedpost.
You have done NOTHING WRONG you’ve been charmed and misled, they are very good at this.
Seriously forget him, block him and don’t waste any more time even thinking about him.
Unfortunately they often see wary, reluctant “virginal” types as a challenge to be “conquered”, various “games” and “bets” with each other along these lines, I would say a bit like “dangerous liaisons” although “cruel intentions” is a closer maturity level to be honest.
With a brother in the army, depending on the relationship you have with him it could be good to double check with him what I’ve said - most guys in the army warn sisters etc off dating squaddies cos they know what many of them are like.
And yea yea yea not all squaddies are like that... but a lot are especially the younger ones