When they weren’t jumping from one activity to the other, they were eating their way through the week.
Lizzie posted a glimpse into their huge seafood feast that they enjoyed at Palazzo Versace.
In the post, there are piles and piles of shellfish, calamari and the well-known aphrodisiac, oysters.
Lizzie captioned the post with an ode to the trip and her 30th birthday shenanigans.
“Here come the dirty thirties!" she wrote.
“Think I might do a month of celebrating? Maybe that’s too extreme? Such a fun week! No, it’s not my birthday until Sunday, which I’ll just chill at home, but plenty more birthday spam to come!
“Seb is still a huge part of my life and was such an amazing week to spend together!”
Seb gushed in her post's comments about how spectacular he thinks she is and how proud he is of all she has achieved.
“Beautiful, intelligent, caring superstar ... so proud of what you’ve overcome and so excited for what your 30s hold for you ... absolutely anything in this world,” said Seb.
The comment was more romantic than most messages from an ex, which are either a dry read or nothing at all.
As if he didn’t already go further than most exes, on Instagram he dedicated another essay to Lizzie.
The post read: “It has been a lot to process ... Liz and I seeing each other for the first time after separating ... wondering how we would feel ... where we might want to head ... anything that’s gone unsaid ... I’m so happy with how we both handled everything.”
He also spilled the two discussed their feelings towards each other and have talked about where they see their relationship going.
Seb revealed, “We may have had some very brutal and equally humorous conversations about exactly where we are at ... but it’s refreshing ... and it’s mature ... and we want to be in other’s lives in some capacity ...”
In true Lizzie fashion, she spent her real birthday around her girlfriends, who spoiled her with cake and balloons.
She also received a birthday message from former MAFS co-star Mel Lucarelli on Instagram.
The post read, “Welcome to 30… So. Much. Fun. Xxx.”
It seems like Lizzie has rung in 30 with all the love surrounding her, and if Seb is really in her life platonically, then they are the friendliest of exes.