It's hard to say what reciprocated love feels like. How do you know 100% that the other person truly does love you, without any doubt? I think that's the scariest part about falling in love. Never knowing for sure what the other person feels about you. You could go years believing they love you, too, only to find out they fell out of love with you half a decade before.
Love is complicated. I knew I was in love with my partner when I woke up next to him, and realized that if I ever lost him, I would miss everything about him. I'd even miss his bad habits. Because I love all of him, not just the parts that I see as "perfect". I think that's the key difference between love and crushes (or lust). With lust, you like only the perfect parts of a person - their appearance, or their funniness, or the way they kiss you. With love, though, you love the whole person. You love them not in spite of their flaws, but despite them. You love them even when they're doing something that makes you mad. When they love you back? It's hard to explain. It's magical, though. It's like, in some ways, you become "one". I guess that's why people see couples as becoming "one" when they marry. You kind of start to pick up each other's habits (for better and worse). You start to talk like one another. Think like the other. Just little things like that. It's different from the beginning stages. The early stages of falling in love are kind of like being high. But once that passes, and you "settle down", it's a calmer kind of love. Neither of you feel you have to prove it any longer.
Love is hard. I think a lot of people, these days, fear it. Which may be why it's difficult to settle down. You still have a lot of time to fall in love. It usually comes when you least expect it. When you're not looking for it at all.