Of course, anon. Marco's had a canon crush on Jackie since forever, now has a canon gf and was intensely distrustful of Tom from the start etc etc. Tom is Star's ex and is mainly trying to get back together with her so hard he was ready to kill Marco and cursed him for it.
Tomco has ascended beyond giving a shit about what happens in canon, nothing can kill it any more. It just ignores anything that seems to shoot it down and draws strength from anything that could be interpreted to support it.
It's the comfy demonic crackship that can't be killed.