Boyfriend🙄

Noticed my boyfriend isn’t brushing his teeth which I think is pure disgusting! How can you wake up in the morning and walk out the door to go to work without brushing your teeth, it’s minging! Any ideas of what I can do/say? I’ve joked about and said stuff like “haha least I brush my teeth” but it hasn’t changed anything? I brush my teeth twice a day and it just makes me feel sick knowing he hasn’t brushed his teeth, it’s just pure laziness.