If your Venus is in Sagittarius
A road trip with no fixed plan sounds like a great date to you. Someone who makes you laugh, or shows you a world you didn't know, is hard for you to resist. You love honestly and generously, with plenty of good humor. A relationship that starts to feel like a cage can make you want to bolt. Closeness and freedom fit together better once you've said how much room you need.
Don't know your Venus sign? Your birth date is usually all it takes to look it up.