Whilst Brittney is performing the blowjob, you can ask Lety to relax and masturbate.
The rest is all just buildup.
Would specifying it in one of those directions help get it to more readers? So, context here: and I still feel like I have to establish my street cred as a bisexual person to be allowed to write her; is that weird? The actual plot is like a sports underdog story.