Khloe Kardashian may be back with French Montana, but it looks like ex-husband Lamar Odom may still be on her mind as well.

Yesterday was Odom's 35th birthday, and Khloe posted a rather cryptic poem on Instagram which read:
    "Closure: Like time suspended, a wound unmended - you and I. We had no ending, said no good-bye. For all my life, I’ll wonder why."

Apparently Khloe called her estranged hubby to wish him happy birthday earlier in the day, and a source told HollywoodLife, "They always talk, and [Lamar's birthday] was no different. They didn’t talk about her boyfriend. It was a very brief, 'Hello, happy birthday' conversation because she was on the run."

Thus far Lamar has reportedly refused to sign divorce papers, but it seems like he might finally be coming to grips with the fact that Khloe has moved on. "Lamar wants her with him but only if she wants to be," a source tells the site. "It's got to be mutual. If not, he's cool with letting her go for good."