Alex turned 25 this weekend and Olivia made sure the day was one to remember by presenting him with a series of surprises.
Along with a romantic meal, Olivia organised delivery of a HUGE bunch if helium balloons. In fact, the bunch was so big we're surprised they didn't take off!
Paying tribute to his girlfriend on Instagram, Alex gushed: "Couldn't ask for a better GF, made my birthday with all the little surprises. @oliviadbuck #mine."
Olivia, meanwhile, shared her own picture of herself and her beau enjoying a romantic dinner. She told her followers: "My gorgeous birthday boy @ab_bowen."
She later tweeted: "Happy Birthday to my Prince @ab_bowen07, hope you enjoyed all your birthday surprises - I had the best day with you."
Alex and Olivia got together during the latest series of ITV2's Love Island and they were eventually crowned runners up, missing out on the £50,000 prize money to Nathan Massey and Cara de la Hoyde.
But the couple are determined to last the distance and have recently dropped the L-bomb. Cute!
On Friday, Olivia shared a picture of herself and Alex kissing with her Instagram followers and captioned it: "La la love you @ab_bowen." Alex replied: "Love you too, babe."
Chatting to us after dropping in to Reveal HQ with her boyfriend, Olivia recently said: "[We are] excited for the whole life we want to start to build together. I've got his best interests at heart and he's got mine, so we both want to do well, with each other."
Alex added: "We're taking every day as it comes. But we're going to put 100 per cent effort in, so that's all that matters at the moment.
"Olivia brings out the best in me - she gets my weirdness, so I can completely be myself with her... She's just a beautiful girl."
Oh, you guys!
Follow us on Twitter @RevealMag for all your celeb, fashion and beauty news!