How To Make Your Girl Happy 2020

Become a good listener. Everyone wants to feel like they're being listened to, but girls care very deeply about being listened to. It's a validation for them, but it's also a sign that you want them more than just physically. Here are some simple, real things you can do right away to become a better listener:
Ask questions about the things she says. If you can follow her conversation, you should be able to ask questions. Show her you’re listening actively, not passively.
Don't interrupt her. Interrupting a girl tells her that what you have to say is more important than what she has to say, which isn't always the case. Let her finish talking before you speak.
Listen to the best parts of her.[1] Everyone has moments, or even whole days, that they'd like to forget. Forget the times when she was frazzled, or frustrated, or off her game. Listen to her best moments and prioritize those over her not-so-good moments. This will make her incredibly happy, and predispose her to do the same for you.

Reciprocate. Whenever you get something, give back a little. It doesn't have to be clockwork, but the idea is important. If she gives you a massage, give her a foot rub the next day. If she writes you a romantic letter on vacation, write her a romantic note and give it to her when she gets back. You want her to see how much work you're putting into the relationship. Remember, you're a reciprocator, not a parasite.
Don't be a robot about giving back every time you get something. That's not very romantic, and it probably won't impress your girl. Try to appear spontaneous, even if you're planning far in advance. It will make her a lot happier.
Don't forget to do things just because. Don't always make something tit-for-tat. Get her ice-cream before school or after work, and don't expect anything in return. You'll earn your karma in the long run.

Earn her trust. Be worthy of her trust. Guys may not care about it that much, but for girls, it's a really important issue: Trust helps them fend off guys until they've proven themselves. She won't truly let you inside until you show her you can be trusted. As you spend more time with her, she'll start to see who you really are and start building trust.[2]
Do not show romantic interest in her friends. Not even a single one of them. Stay steady as an arrow and clean as a whistle. Always tell the truth, even if it hurts. Getting caught in a lie is much, much worse than fessing up to something unpleasant. Be there for her when she needs it the most. When all her friends have deserted her, when she's feeling her awfullest, remind her that you're there for the long-haul. Send her a note saying how much she means to you; give her flowers; remind her of all the things that she does for other people that make her special to you. Be as good as your word. This doesn’t just mean keeping a big promise every now and then; it means doing the dishes or picking up those socks like you said you would. If you say you're going to do something, follow through with it.