but they're not sure what they don't feel cuz Striker is a "bad boy" and Lumiere doesn't think he's good enough for my OC)? Stubborn Lumiere tries to rationalize his and OC's relationship with Strik

Based on the brief synopsis you've provided of events, it sounds like the relationship between your Original Character (OC) Lumiere and Striker is quite complex. Here's an attempt at deciphering it: Their status as of today, the second day they have known each other, might be best described as "complicated." There's a connection between them that has escalated quickly - from strangers to a sexual relationship within a very short period. It appears Striker harbors some emotions, maybe even love, despite the short amount of time, as voiced before they fell asleep. Lumiere, however, is more reserved and unsure about the whole thing. They acknowledge that the sexual part was fun but also clarified that it does not make them a couple, perhaps trying to keep a level-headed perspective without rushing into things emotionally. Lumiere sounds as though they are confused, trying to process their emotions after this whirlwind of unexpected events. Striker's pet name for Lumiere, "my Stubborn," suggests he finds Lumiere's resistance endearing or even attractive. However, Lumiere's rationality prevents them from jumping into the relationship headfirst because they're fully aware they haven't known Striker long enough to make a fully informed decision about their feelings. In summary, their relationship status might certainly be categorical as "It's Complicated" due to the mixture of physical interaction, possible romantic interest from Striker, and emotional discernment from Lumiere. My advice would be for Lumiere to continue to take things slow and concentrate on understanding their feelings and Striker's intentions better. For Striker, clear and honest communication about his feelings might give Lumiere the clarity they need.