‘Cause, baby, now they’ve got bad blood.

Blake Lively reportedly hasn’t congratulated Taylor Swift on her engagement to Travis Kelce after their longtime friendship fell apart this year.

“Blake didn’t reach out [following the engagement announcement] and isn’t going to,” a source told the Daily Mail Wednesday.

“This isn’t the time. What would be the point of reaching out now? It really makes no sense. [Lively] has bigger fish to fry,” the insider added, referencing the actress’s ongoing legal drama with Justin Baldoni.

The outlet reported that the “Gossip Girl” alum “doesn’t talk about Taylor at all” and doesn’t ponder on their doomed friendship.

“This is something that we would’ve talked about in the past, like what was going to happen, if she was going to be in the wedding, what

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