Say You'll Be Nine — Lucy Lennox

This was an easy, mostly enjoyable read. From the blurb:

One dilapidated cabin in need of renovation. Two stubborn men pretending to be a couple. Three summer months to get the job done. Four tangled legs in only one bed. Five cameras catching it all for YouTube. Six hundred thousand Instagram followers. Seven nosy family members with Opinions. Eight thousand reasons they should never fall in love. Nine million reasons why they will.