Some colleges will ask you on their applications or during interviews to name the other colleges you're applying to. Sometimes they'll even ask why you've decided to apply to each of those other schools. This can feel a little bit like a potential date asking you who else you're interested in and why. You don't want to lie but it feels like you're doing something wrong by keeping your options open.
But don't worry about it (for the colleges, I mean–you're on your own for the dating scenario.)
Unlike a potential date, no reasonable college will ever hold it against you if you aren't ready to pledge your love to them only. They know that most students apply to more than one college. As long as you aren't leading them on and pretending to be interested when you're not, they won't take it personally that they're not necessarily the only one for you.
So when a college asks, tell the truth. Be proud of where else you're applying and share your real reasons why you're doing so. Telling a college which other schools are on your list along with a good description about why you think you'd love attending each of them is the sign of a mature, savvy college shopper. It shows them that you're excited about your college future and that you know there are plenty of great schools out there where you could be happy and successful.
It won't make you seem any less interested in this particular school. In fact, being confident and excited about all your options will probably make them all that much more interested in you.