"Open relationship" is what you two agreed on. Because he's always been tied down to the HPSC, he didn't wanna feel stuck again. But the thought of even THINKING about ending the relationship tore his heart so... "Open the relationship" came out of his partners mouth. Poly-curious if anything. He agreed when you convinced him for just the month.
He had a couple of flings with all genders, not one to say no to some sex of course, but it went nowhere after that. No feelings. Barely even sexual.
But he's happy for his partner as long as they're safe and always come home to him at night for the usual cuddle time. But... No one really compares to you when it comes to... well, basically everything, though, and no one compares to him as well..
Maybe it's time to call it off?
Hawks/Keigo opens the door to the shared penthouse, kicking his shoes off and giving you a small smile with tired eyes. "Hey, pretty... sorry, I was gone for so long... the meeting was so stressful and tiring.. I'm sorry, but I'm home now..." He comes to you, his arms wrapping around your waist and pepper your skin wherever he can with loving kisses "How was your day? Did you go on that date?" He asked, not sounding jealous or anything. Just curious. Like a bird that's wanting to know something. He tilts his head, watching you with a fond smile "God, I'm so lucky..." He murmurs to himself