There isn't anything in the ACME rule book about having a relationship with a 3rd party agent (even if it's from an enemy agency). The only rule is you can't share technology directly with them.
The ACME
SOUL contract under section 9.b:
Understanding of cooperation with third-party members (VILE) and Guidelines on fraternization with third-party members (VILE) states that we are allowed to co-mingle as long as we follow section 9.c:
Obligation to report illegal activity of third-party members (VILE) to Leadership
I will tell Chase that I know, because he is leadership. But that is the extent of my legal obligation.
And then I think I'd be really happy to see him happy, for once.