might wanna talk to your ABF about this...its pretty serious if hes eating the patches already. I am a former junky as well and used to chew the 1600mcg fetanyl lollipops all the time. Its a very very potent opiod, probably 2nd strongest on the Opiate//Opiod Ladder. The only stronger high than eating the fetanyl patches or lolli's is mainlining heroin and god knows you dont want to be around when the fetanyl loses its effect and he moves on.
Best advice i can give is sit him down and really express how his actions are effecting you and tell him you want him to stop doing them(not only will it be better for your relationship with him, overall he will feel much better when off them for a few weeks). If he says "i can handle it" or "your making a mountain out of a molehill i just like getting high every once in a while" or something along those lines, get rid of him. Nothing worse than dealing with an active junky(trust me on this one!!!)
Be safe and let us know how it goes ~~