Sam Frost celebrates Dave Billsborrow birthday last night.

Video via Channel 10

Even though the lovely Sam Frost chose Sasha as her one and only on The Bachelorette, there seems to be no love lost between her potential flames from last year.

Posting on Instagram, Sam shared photos celebrating the birthday of Dave The Plumber, a.k.a. Dave Billsborrow.

Dave also posted an adorable photo from his celebrations, calling Sam one of his "best friends".

You know the best thing about birthdays... Hanging with your best friends! ????????????????

A photo posted by Dave Billsborrow (@dave_billsborrow) on Sep 10, 2016 at 4:35am PDT

Hilariously, Dave Lloyd also from the Bachelorette, commented on the photo wondering why he and Sash weren't the "best friends".

Sam wasn't going to put up with kind of sass replying, "...mate you and sash weren't there! If you're really besties you would have come ???? don't worry I held the fort #replaced..."

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Taking a look through Dave the Plumber's Instagram, it seems as though there are a number of people who have remained close friends from last year.

Scroll through to see the 2015 Bachelorette squad. (Post continues after gallery.)

2015 Bachelorette squad

Cheeky Friday drinks with the best. So good..Image via @dave_billsborrow

Righto last one of Richie, because he is already annoying me!! My top five birds are Megan, Olena, Nikki, Sasha and Faith. I'm torn between a few like Tiffany and Tolyna. I think they are all great in their own special and CRAZY way. I also can't wait to see what Keira gets ups to.Image via @dave_billsborrow

Always a pleasure never a choir, oh actually until Davey starts whinging about cheese then it's enough. Love him tho ????????Image via @dave_billsborrow

Good luck @richie_strahan. looking forward to your sayings in awkward situations and watching you bumble your way through to find love..Image via @dave_billsborrow

Having our first business meeting! In the inspiration of @michael.d.turnbull bringing a multi-billion dollar business to Australian shores soon . @sash1313 @anavappula.. sorry trillion. I can't live off a billon.Image via @dave_billsborrow

Still feeling the weekend. Good catch up with the boys!!Image via @dave_billsborrow

In great company. @fro01 missed her flight home and @richie_strahan arrived to Sydney. Good to be with these 2 muppetsImage via @dave_billsborrow

Talking tactics and eating steaks. Plus watching @richie_strahan deal with all free wheelers! ???????????????? #kikiforthewinImage via @davey_lloyd

Throughout this season of The Bachelor, both Daves have been sharing who they think are in to take Richie's heart.

Dave Lloyd has even gone as far to call some of the women "free wheelers".

"Talking tactics and eating steaks. Plus watching Richie deal with all free wheelers! #kikiforthewin", Dave posted to Instagram.

Meanwhile, at the beginning of the season Dave The Plumber picked Olena, Sasha, Megan, Nikki and Faith for the top five.

"I think they are all great in their own special and CRAZY way. I also can't wait to see what Keira gets up to," he added.

To hear who the Mamamia team think will win The Bachelor, listen to BachChat.

Sam Frost spent last night celebrating with a previous Bachelor flame.

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2015 Bachelorette squad