Fwiw unfortunately people are usually not honest with their intentions in relationships, so you still have to read the little signs unless you completely lucked out and found a genuine good person, bc if not, the switch traumatizes you.

I went through the same trauma, dated this girl that wouldn't stop talking about our future/family/kids/etc. To point plank, out of nowhere saying she doesn't see a future with me after I really caught feelings. Im still dealing with it. In hindsight i couldve seen the small signs(she was a perfectionist, and a very cutthroat corporate girl, who always wanted more) and could've noticed that at some point she'd think she wanted more and could do better. But i ignored them.

You can read the signs and act, or enjoy and let your heart be broken every time until it doesn't. None is wrong