I never said it made sense lol. Just providing what I know from the past story.
In terms of figuring it out, you have to keep in mind Chase’s characterization. Viewing it from the lens of a highly traumatized alpha with memory gaps on what he’s done and who he’s been with…. I think it’s kind of expected that Chase’s first thought isn’t “huh I wonder if we slept together in the past”. That’s a pretty unrealistic reality to toss about for him, as well as the human instinct of innate and subconscious reasonable deniability. We as the readers are obvi like “it’s right there” but we have an omniscient point of view.. he does not.

Im confused, dont omegas that are imprinted can only sleep with their alphas, why isnt it obvious to chase that josh is his omega or am i just not omegaverse veteran