He will probably feel the danger coming his way, leave the house and laugh at your face at how you burned it down over a little rodent, then he will follow you to your next house/apartment because he's actually in love with you and just needs a kiss to turn into a handsome prince...
Or maybe hes not and when you get close enough to him, he'll bite you, infect you with some gangrenous disease and you'll die. RIP.