Paris, France
Are we being extremely basic with this list? Yes. Will we offer some deeper cut suggestions in a second? Also yes. But come on, it’s the month of Valentine’s Day, so why not go all out and spend it in the city that I believe invented love. May have to check my facts on that.
Regardless, February actually is a pretty good time to visit Paris, as the tourist season is mostly over, so it’s pretty quiet. Additionally, it’s cold, but not too cold - usually around 30 to 40 degrees. Meaning if you happen to stroll over to the Eiffel Tower, and happen to get down on one knee, you’re not going to freeze your butt off.
Fun fact: again a cursory glance, but hotels at least are about a quarter of the price in Paris for February that they are for Super Bowl weekend in Vegas.