For their safety, of course.
He's like Lex. Except that Lex was kind enough to also make sure Lois wouldn't slip in the shower and nobody would find her for days. So, he put in security video, too.
Or he didn't realize that Superman was as close as her husband when he handed her the flower and that he would find the bug in her flower.
Hmm...Nah...
Heat vision target practice on the boutonniere.
Oh. Okay. Just figured, it's just a small flower, nothing more than a little poof, so not that satisfying, like, for instance, making the Batmobile go poof, again.

Michael