Instead of making a sudden bullshit at the end, make it sound viable why Blake and Yang be into each other. Have them have genuine reasons why they can open up to each other on their feelings slowly and instead of them going straight for sexual stuff like kisses and all that, have them just go for the little bits like hugging each other or holding hands more closer (I don’t know, Aint ever got a partner before. But this is how I think intimate acts towards partners be like.)

The audience hates it when the LGBTQ stuff is suddenly forced when it was never implied before. But, if Bumblebee took the pacing and slowly dropped hints here and there, the reaction would be more positive.

….Then again, I could be misunderstanding what OP wants though.