Yesterday, Ashley Johnson, the voice of Gwen Tennyson in every series since the original one, tweeted that she's recording with the voice actor Greg Cipes who is actually the voice of Kevin Levin. You can take a look at the tweet here: https://twitter.com/TheVulcanSalute/status/595448316567126017 But this so far doesn't mean almost anything. Then we saw that Greg responded to Ashley's post, saying: 'You are my cartoon girlfriend eternally. Love you!!'. We're not familiar with other series that they participated in, but for sure, Gwen and Kevin are a couple in Ben 10. You can also see Greg's response here: https://twitter.com/GregCipes/status/595467393595379714