Blake Shelton_Miranda Lambert
Miranda Lambert posted a photo Monday of her riding a "unicorn" for her birthday. The same day, reports surfaced that her ex-husband, Blake Shelton, and Gwen Stefani were discussing secret "breakup" plans in case they split. Reuters/Eric Henderson

Miranda Lambert took to her Instagram account Monday to share a photo of her riding a “unicorn,” while a report claims her ex-husband, Blake Shelton, and Gwen Stefani are discussing “breakup” plans. The “Over You” singer, who has remained silent over Shelton and Stefani’s romance, turns 32 Tuesday.

“Never too old to ride a unicorn...And thank God for friends that spend the day with you painting your pony,” Lambert captioned the photo, with the hashtags #32tomorrow #bday #unicornsarereal #sophie #gypsyvanner #glitter #reallifelisafrank.

A source told Hollywood Life that Lambert feels tlike “she doesn’t even know who [Shelton] is anymore.”

“She doesn’t understand why they (Blake and Gwen) had to make things official that night,” the source said about the Country Music Awards. “It was so insensitive, she was with this guy for almost a decade and this is how he treats her.”

Last week, Shelton and Stefani confirmed their relationship after months of dating rumors. The two “The Voice” coaches reportedly became close to each other following their divorce from their respective partners.

However, Shelton and Gavin Rossdale's ex-wife are working on a secret “breakup” plan after discussions with “The Voice” executives, Radar Online reported.

“The studio bosses sat them down last week after they confirmed that they were dating to discuss the whole situation and what would happen in the event that they broke up,” a source close to production told Radar Online. “The execs even discussed adding a breakup clause to their contracts.”

Luckily, “Gwen and Blake assured them that, if it does not work out, they will break up on amicable terms because neither of them wants to jeopardize the show,” the source reportedly said.

Meanwhile, Shelton is gushing over Stefani on TV as the new couple continues judging the reality singing show.

“Team Gwen overall is whipping the crap out of Team Adam tonight,” Blake said while poking fun at Adam Levin on “The Voice.”

“I’m just calling it like I see it. It’s fun to see Gwen just whip the crap out of Adam tonight. It makes me so happy! Just seeing Gwen kick the crap out of him makes me so happy,” the “Sangria” singer said.