Justin Bieber has been big on his #WCWs lately, posting a stream of photos with former flame Selena Gomez (still no word on whether or not the throwbacks mean anything) as well as pictures of ladies we know well(hi, Rihanna!) Tayler added that she came up with her hook "while window shopping with a good friend talking about boys." She went on to say, "we were both in confusing relationships that weren’t even officially relationships." (Raise your hand if you've been there. We thought so.) But she adds that she and her friend "decided that if some other dude came up to us right now and asked if we’re single we’d say, 'Well, technically I’m singIe but emotionally I’m unavailable.' Then it clicked in my head and I knew that it needed to be a song." After sharing in an Instagram post that 2017 was the "hardest/worst year,"Sarah spoke with seven gun-reform activists who have firsthand experience with gun violence about what being an ally means to them and how those not directly impacted by it can support victims, survivors, and their loved ones. Here’s what you need to know about them:Jordan Gomes