That line, “Don’t go falling in love with me”, sounds like a playful joke more than anything serious. A lot of people say things like that after a really good moment to lighten the mood, especially if things got a little romantic or intense.
If he said it with a smile or a teasing tone, don’t stress over it. He was probably just being flirty. But if he sounded serious or distant, it could’ve been his way of saying he doesn’t want things to get too deep.
For now, just take it for what it was — a fun moment after a great date. See how he acts after this. If he keeps calling, texting, and wanting to see you, then he’s into it. If he starts pulling back, then maybe he meant it more seriously.
No need to overthink it right now. Just enjoy where it’s going and let his actions tell you the truth.