Teen Mom 2 star Jenelle Evans was one of many stars to attend the 2015 VMAs! And while she was out on the West Coast, the mom-of-two made the most of her time — hitting the beach in an itsy-bitsy bikini, checking out LA’s hottest clubs and more!

jenelle evans

Jenelle checks out the party scene and the beach in LA.

Which begs the question: Who was watching her son, Kaiser, while she was living it up in the City of Angels? Well, it turns out it wasn’t the one-year-old’s daddy, Nathan Griffith!

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A source tells Radar Online the former Marine is “furious that he isn’t seeing his son,” who, instead, is staying with one of the 23-year-old mom’s friends.

“That is totally unfair,” the source explains. “He wants to see Kaiser and he can’t believe that she is all the way in LA and he still can’t see him. But he isn’t going to go on Twitter and blast her or anything childish like that.”

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His smile tho. 💕😂💋

A post shared by Jenelle Eason (@j_evans1219) on

Jenelle had previously explained that if no custody agreement is in place, she has full rights — something Nathan plans on changing.

“Nathan just has to get everything together. He wants to do things the right way and not mess anything up. He wants to be able to see his son,” the source explains.

“It kills him not [being] able to see him. Jenelle is really playing dirty.”