He hisses at how suddenly Ignis impaled himself onto his cock, despite his warnings. Gladio gets it, his heat must be awful with his mate so close to giving him what he wants, but he was worried about hurting him. Ignis is so noisy and needy and wrecked in a way that he usually only is after Gladio has pushed his line of pain and pleasure that even with how tight his mate is around him Gladio groans low against his warm skin. Curling his whole larger body over him.

"My mate...." He groans out, but does not stop. Ignis will not let him stop, and he rolls his hips to push himself all the way up into his lover, joined completely. He does not stay that way however. Because heat is all about the want and need for each other, and every motion of Ignis' body underneath him practically begs Gladio to fuck him.

So he does. Thrusts slow but hard into him, hissing out words of pleasure as he lets his instincts overtake his worry to give Ignis what he needs.

"I'm gonna fill you up so good, Iggy- I won't leave you wanting for even a moment anymore, I'm here now."

He'd talk filthy about breeding his mate full, but that might have to wait until he makes sure Ignis remembers that of course, Gladio cannot make good on that exact promise.