Looking for a story where a girlfriend gets with her boyfriends lazy brother

[CluelessDork]

I've been searching for this series for hours, but here's some key details:

1) It is from the girlfriends PoV most of the time
2) In the first chapter she cheats via app and is blindfolded, neither realize who the other is
3) Later lazy brother moves into their apartment and they both realize what happened the other night was actually bad, but their affair continues either way, eventually boyfriend finds out and is sorta into it (i.e. his brother fucking his girl)
4) They go on vacation and she chooses to be in the backseat with the brother and she blows him in the car while boyfriend drives and keeps sneaking glances back, get chided for bad driving and misses climax I believe due to re-focusing on driving
5) They have a fancy date at a restaurant at boyfriends expense, he realizes it isn't just sex anymore but emotional cuckolding too

6) Not entirely sure if I am imagining this part, but I sincerely feel like one point the brother demands boyfriend (his younger brother) to use his mouth to put a condom on his bigger dick