The first one, is to notice how aware he is of your feelings. How does he act if he think you are sad or have your feelings hurt? The answer will reveal a lot. If he really loves you he would never want you to feel bad, he will do everything he can to cheer you up or fix things.

Another thing that can reveal a lot about his feelings, is how much he goes out of his way to see or be with you. When someone loves you, all they want to do is be around you and they would do anything in their power to make that happen! It is for sure a red flag when they only ask to see you when it is convenient for them.

He sacrifices things that are important to him to make time for you or to do things that will make you happy.  This is a big sign of unselfishness and a sign that he genuinely cares about your happiness.

Even when he's had a hard day, does being around you put a smile on his face? Does his mood improve as soon as you get together?

When a guy is in love, he'll be temporarily blinded to your weaknesses and shortcomings.  Do you always forget things? He'll think it's cute.  Do you stay up late at night playing candy crush? Also, cute.  Only after the infatuation period has faded will weaknesses become annoying.

When he sees you his eyes will light up and sparkle. This is a BIG sign that he has real feelings for you.

A guy who is in love will want his family to love you and for you to love his family too. He'll be eager for you to meet them.