1. Waking up thinking of someone constantly.
   Waking up with someone special on your mind is a major sign of caring how that person is doing.  You would naturally want someone you may love to be enjoying life and healthy.
2. Wishing to see the person often. Wanting to see another person in particular often proves that you are more than likely willing to spend your free time with him/her.  Doing so will usually increase in your bonding and allow your feelings to grow.
3. Jealousy. Usually in friendships jealousy does not occur.  If you begin to get jealous due to your friend spending time with others more than with yourself, then you are beginning to catch feelings for him/her.
4. Buying gifts. Generally speaking, in the older days the average man or woman would try to woo, or win over, the desired person by showing many acts of kindness including the giving of gifts.  Having the willingness to buy gifts for someone with little mind of a budget shows that you care enough about that person to sacrifice to ensure their happiness no matter what.
5. Having a sense to protect the person and their reputation. There’s a major reason why “Yo Mama” jokes manage to stir up so much trouble…  People love their parents and feel the need to protect them and their reputation.  If you gain this sense for a friend or significant other, then you just may be in the process of falling in love.

Do any of these symptoms describe you?  If so, you should really consider the relationship that you have with the people you know and think these ways of.