Accept her

"I love you, Caoimhe. I don't want to do this without you."

Caoimhe stops sniffling for a moment, her face transfixed by surprise.

"What?"

"I want to stay with you. I'm OK if you have sex with other people. You let me do it, right?"

"Do you mean it, Jack?"

"Only if there's no more lies. I want you to be completely honest with me."

"Of course. I'll never lie to you again, I swear on my life," Caoimhe nods. "Oh god, Jack, thank you. I'm so grateful for you. I'll make it up to you, I promise. I know it's hard knowing I'm... with other people."

"Actually, its kinda hot," you admit.

"Really?" Caoimhe sniffles. "You liked it? You were very hard."

"Yeah, I did. It was sexy seeing you get fucked that hard."

Caoimhe grabs you and brings you in for a tight, squeezy hug.

"Oh thank you so much! You're not lying just to hurt me, right?"

"I wouldn't do that to you, baby. I love you."

"I love you too, Jack. I'm going to treat you so well. I'll make breakfast for you every day in the communal kitchens! I'll do your homework, I'll suck your cock whenever you want, I'll do everything! I'm so grateful! I never thought I'd be able to get both you and to keep having sex like this. It's just incredible!"

"I'm glad you're happy, Caoimhe."

She leans in, planting a kiss on your lips. Your face is covered with dripping cum as it presses against hers, as her tongue enters your mouth, leaving you to taste Tyler's cum on her tongue and lips.

"We should clean up and get back to the play," Caoimhe sniffles, smiling at you. "Can you come over later? That would make me so happy. I'll buy snacks and we can do whatever you want!"

"Sure, Caoimhe. I'd love that."

Caoimhe's right. She does make it up to you. From then on, she tries extra hard to make you feel appreciated. Little gifts, bringing you lunch, helping you with homework, fulfilling your every sexual fantasy. Of course, there's downsides. Quite a few jocks are happy to mock you and remind you how your girlfriend was sucking them off just the previous day. It seems some of them set it up so you'll stumble across Caoimhe with her hole stretched, and like the good little cuckold you are, you wait patiently for them to fuck her and move in afterwards, fucking her creampied pussy afterwards while you think about how hard she'd been fucked by those bastard jocks.

And you absolutely love it.

Truly, you have become a cuckold in every way.