Hmm, I think this is the first time I've seen Ramen-kun be pessimistic regarding Jun's Tomo problems. But yeah, since Jun twisted the knife, the sabotage is justified.
Well ... Tomo said the exact same gotdamn thing ... so ... Knucklehead to knucklehead ... they match.
Also, It's probably just as dangerous for Jun to have sex with Tomo as it is for Tomo to have sex with Jun. Only these two will not end up in traction after the deed.