The girl is desperate, started following yesterday
She doesn't follow his public account, only his private and he only follows her from his private. Liking his public posts is the same as you or me liking it, it will get lost in the millions of other likes as he wont notice it, unless he searches for it (which i doubt as he will be completely unaware that its happened). Personally i think she's doing it for attention as she knows the teens/fans will notice it and bring her to the spotlight again, our Claire's accessories is not a stupid girl. She knows the attention she got when people jumped on his comment on her last post and i swear she or her 'friend' posted on here last time
The irony of the whole things is that since Claire left the UK, Mase has been doing the JG liking game with other girls from his private, so whatever she is to him, she's clearly insignificant and she knows it, hence the acts of desperation.
I wouldn't actually be surprised if Mason has been put off Claire because of the attention that was generated the last time. We all know he likes to do his whoring in private and he got exposed with Claire.