Fireworks Flame by Lacey Daize

Rick only meant to go to a conference in Vegas, but he ended up with more than he’d bargained for.
Rick loves his son Dennis more than anything, and never regrets that one night with the handsome alpha—Alan. But he does wish that he knew enough about the other man to tell him that he’s a father. However, his search is renewed when it’s clear just how much their son wants to know his missing parent.
Alan can’t stop thinking of the one who got away, but is he ready for a family?
Alan’s first major accounting conference came with the unexpected bonus of handsome omega Rick. But even after they’ve all gone home, he can’t get the other man out of his mind. He never thought he had a child from that night though. When he learns about his son, he can’t wait to meet him, and to reconnect with the man who’d caught his eye so long ago.
But can one night turn into forever?

Fireworks Flame is an 18K word , non-shifter, M/M, mpreg, omegaverse romance