Of course you can ask a question, the one you've asked is however a very difficult one. There are different ways to love people, you have the love for family members which is a form of platonic love, it means you care deeply for people you know and would be very sad if you lost them. I personally feel this is the most difficult kind of love to know you're feeling, but you generally feel it for your pets, (close) family, and perhaps some friends.
Then there is romantic love, when you feel it, you'll know .
I guess there's a third love, the one which many religions talk about.
In the end, what each of these means for you is something you'll have to find out for yourself.