Dating Raph would include…
Protectiveness. Raph shares this trait with Leo. He naturally wants to protect those he loves, his s.o. above all. He would escort you to places and text you often. He would not want to teach you to fight, in fear of hurting you, though might later be persuaded.
Him being affectionate. At first, Raph would only show affection in private. He would hold and kiss you whenever you were away from prying eyes. Eventually, he would become more comfortable with showing you affection.
Him being jealous. It’s not that he doesn’t trust you, it’s that he doesn’t think he’s enough for you. He’s brash and angry and pretty much a giant. He would become jealous if you spent too much time with other people, especially one of his brothers. Raph has the lowest self esteem of his brothers, which contributes to this.
Lots of spooning. Raph likes closeness and always loves to be your big spoon. If he gets too comfortable, he’ll convince you to stay, not wanting to lose your presence.
Him being amazed. He looks in the mirror and sees a mutant. A giant turtle. How can you look at him and love what you see? How the hell did he get so lucky??
Him spending a lot of time at your place. While you are often at the lair, Raph loves your apartment. His brothers aren’t there a lot, so it’s a special place for just you two.
A locket. I have this headcannon that Raph would stumble upon an old, bronze locket. He’d clean it up and put a little photo of the two of them together inside and give it to his s.o.
Late night visits and talks. Raph would often come at night. He’d tap on your window and wait to come in. Sometimes he wants to talk, other times he just lays down and holds you.
Him showing you a different side of Him. Raph isn’t too good at communicating his feelings. He tends to bottle things up. But you would see things about him that no one else would, giving you a better understanding of the turtle.
Him ranting. Raph butts heads with his brothers often, Leo the most, and will often rant to his s.o. Once he ran out of steam, he’s just want to stay with you for a while.
Him loving you strongly. Raph feels with everything he has, 100%. His s.o. is everything to him. He needs them so badly though he won’t always say it.
Lots of neck and shoulder kisses, with a light bite here and there. Oh and push up kisses too…
Silent communicating. You would be able to tell what Raph was feeling and act accordingly. Affection when he needed it or giving him space.
Raph being absolutely terrified.
He’s never loved anyone this strongly before. You’re his world, his everything. He’s so scared of messing up and driving you away. What if he hurts you? What if he loses control of his anger and you suffer because of it? What if he isn’t enough for you?
He wouldn’t speak about these feelings often but his s.o. would most definitely be aware of them. When Raph looks at you, he sees the sun, the moon, and the stars. He remembers all those stupid love songs and everything.