When Bob visits Skerritt and they embrace, Bob is clearly wearing a wedding ring which is not present in any other scene including in the continuation of this meeting. Given Bob Muldoon and Ruth Guthrie's differing names it could be presumed they are not married.
Bob Muldoon: Every day I wake up thinking today's the day I'm gonna see you. And one of those days, it will be so. And then we can ride off to somewhere. Somewhere far away.