They're not afraid to pack on the PDA! Justin Bieber and Hailey Baldwin took their whirlwind romance to the next level after Justin popped the question last week. Now that the couple is engaged, they've been going more and more public with their relationship and in the early hours of Saturday, July 14, Justin took to Instagram to share a sexy PDA pic with his bride-to-be.

In the shot, Justin and Hailey were locked in a super steamy kiss while sitting in a hot tub. Justin shared the photo just hours after he finally followed Hailey on Instagram, and fans were particularly curious as to why he wasn't following his girlfriend in the first place, according to Us Weekly. But, without any explanation, he changed his mind and now Hailey is one of the 92 people that Justin is following on the social media platform.

But there might have been a deeper reason behind why Justin wasn't following his girl on Instagram before and it might have to do with her relationship with her ex-boyfriend, singer Shawn Mendes. Sources exclusively revealed to Life & Style that Justin specifically asked Hailey to wipe her Instagram page clean any and all traces of her ex before he could take the next step in their relationship.

"Justin wants to take his relationship with Hailey to the next level, but he can’t do that until he feels confident she isn’t pining for someone else," an insider revealed.

View this post on Instagram

Was gonna wait a while to say anything but word travels fast, listen plain and simple Hailey I am soooo in love with everything about you! So committed to spending my life getting to know every single part of you loving you patiently and kindLY. I promise to lead our family with honor and integrity letting Jesus through his Holy Spirit guide us in everything we do and every decision we make. My heart is COMPLETELY and FULLY YOURS and I will ALWAYS put you first! You are the love of my life Hailey Baldwin and I wouldn’t want to spend it with anybody else. You make me so much better and we compliment eachother so well!! Can’t wait for the best season of life yet!. It’s funny because now with you everything seems to make sense! The thing I am most excited for is that my little brother and sister get to see another healthy stable marriage and look for the same!!! Gods timing really is literally perfect, we got engaged on the seventh day of the seventh month, the number seven is the number of spiritual perfection, it’s true GOOGLE IT! Isn’t that nuts? By the way I didn’t plan that, anyways My goodness does feel good to have our future secured! WERE GONNA BE BETTER AT 70 BABY HERE WE GO! “He who finds a wife finds a good thing and obtains FAVOR from the Lord!” This is the year of favor!!!!

A post shared by Justin Bieber (@justinbieber) on

But Hailey it seems like Justin had nothing to worry about because Hailey is completely over her ex, and when he asked her to delete photos of Shawn from her page, she happily obliged. "Erasing every trace of Shawn on her social media was a way for Hailey to prove her loyalty," the insider added. "And she had no problem pressing delete."