Celine Headed For A Titanic Breakdown!

Pals of strung-out songbird Celine Dion fear she’s headed for a devastating meltdown — and a shrink grimly warns that the still-grieving widow needs help or she’ll crack up!

By day, the Canadian diva, still haunted by the 2016 death of hubby-manager René Angélil, is working herself to a frazzle promoting her new album, Courage, insiders say.

And at night the 51-year-old chanteuse, who’s undergone a drastic diet and weight loss, has also been burning the candle at both ends with flirty calls with rapper Drake and heavy nightclubbing with gay backup dancer Pepe Muñoz.

Celine’s also been locking herself in her room to reread texts that René — who discovered her when she was 12 and married her when she was 24 — sent just before his cancer/heart attack death at age 73.

“She’s scarily thin and barely eats,” dishes an insider. “Many fear she’s going to come to a crashing halt.”