RISKY BIZ FOR EXES TOMMY & HEATHER

Back in each other’s toxic orbit

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TINSELTOWN train wrecks Heather Locklear and Tommy Lee are leaning on each other after their respective splits — but insiders say their pals fear the former marrieds are a toxic combo.

Sources snitch that the exes, who were wed from 1986 to 1993, are taking comfort in each other now that they’re both on the market.

“They’ve been in touch for years, but a lot more since they both became single, and there’s definitely still a spark they’d love to explore,” spills a spy.