Really shy with PDA , but he would excuse himself as " respectful " with you in front of the others
Would steal flowers and clothes for you , and if you get mad for him doing it , he will ask April for help to buy you things that he thinks that you would like
Tries to call you everytime that he can to check up on you
He can't listen to love songs anymore without thinking about you , so if he's far away from you he would probably try to avoid them to not get sentimental
He likes to help you clean , but hates doing the dishes and washing clothes , he hopes you do those for him
In private , he would tease you with dirty jokes just to see you blush
Tries to be on time with your dates , but fails , and feels like the worse boyfriend in the world
Silent jealous , but he tries to be logical about it , but in the end makes him more self conscious , and goes to Splinter , April or Donatello for an advice
Kinda of a stalker , but only if you are out of your home
Loves quality time , it's his first love language after service
Always makes sure you ain't there when he's killing someone , doesn't want you to get traumatized or scared of him
Not totally shy with PDA , but if he didn't initiate it , he would get all blushy and flustered
Writes you his favorites songs lyrics in letters
Would ask April to buy you clothes on his color
He would probably suggest more than once to investigate if it's possible for a teenage couple to marry , do not tell him the truth
A lot of pet names for you , and for him , it only takes the most cheesy pet name to convince him to do anything you want
Would try to learn how to cook better for you
Dramatically jealous , but it only takes a kiss or two to calm him down
Movie dates are now your routine
His main love language is physical / verbal affection and service
50/50 with PDA , he would hug you all you want but he's shy with kisses in front of others
In secret would steal things that you like but he would tell you that he found them or bought them
From time to time likes to give you a drawing , sometimes of you , landscapes that you both visited , your most used stuff , etc
He would totally ask you to come to the sewers and " help " him on training ( not against you , he just can't ) , but he only wants to show off
Silent jealous but he would be too obvious about it that it's not even silent anymore , but nothing that a good talk can't resolve
Would also try to show off his dance skills , but he doesn't know how to slow dance , in that case he would try make himself invisible
Would give you his slice of pizza and katanas if you ask nicely ( You know , the type of flirty nice )
Quality time and gifts are his main language