✿ Sirius and Marlene would get bored just shagging in their bedroom, so they literally tried every place in their flat they could find to shag. They then decided they wanted something new and exciting. They then went to every hotel that was close by them in muggle London. People thought they were mental.
♥ Sirius was never close to his family and Marlene wasn’t the closest to hers, so they created their own family that consisted of: James, Remus, Peter, Lily, Mary, Alice, Dorcas, and Emmeline. They had a tradition that every Friday night they had to go out to a bar and they would all get wasted, even Lily.
♒ Marlene was always the one to cook and most of the time Sirius would sit on the counter out of her way (other wise it would piss her off) and watch her, talking to her as she cooked dinner or any other meal. When she was cooking dinner specifically Sirius would always end up distracting her and they would end up shagging on the counter, wall, or table.
■ It wasn’t a secret that Sirius and Marlene were obsessed with rock n’ roll music, so they always put a bunch of posters up of their favourite band in their bedroom. The walls started to fill up and when one of them got another posted they would take the other’s off the wall so they would have room for their own. It got to the point of them fighting and not speaking to each other for an entire day, so Lily stepped in and started putting the remaining posters that didn’t fit in their bedroom into the living room instead.
☮ (This is one of my fav headcanons, I hope you like it.) Marlene and Sirius had a lot of the same friends, but through work and things after they graduated they made separate friends as well. One of the friends Marlene made was a bloke about her age named Ethan that she worked with, and they got really close, much to Sirius’ annoyance. She would go out to bars with Ethan sometimes and out to lunch with him (mind you she did the exact same thing with Remus and Sirius never got mad about that) and one day Sirius confronted the bloke and told him that he ever crossed the line of friendship with Marlene Sirius would kill him. Ethan laughed and told Sirius he was gay, and it was one of rare moments Sirius’ cheeks turned red.
♡ Sirius and Marlene’s first official date as a couple was to the movies, and they saw Halloween. James told Sirius it would be a good idea because he figured Marlene would be cuddling up to Sirius the entire time scared something was going to jump out. That didn’t happen. She actually ended up practically yelling at the girl in the film the entire time, telling her that she was an idiot and deserved to die if she was going to run upstairs instead of going outside, or grab a coat hanger for a weapon over a knife.