Poisonous versus Venomous
Poisonous refers to something that is toxic if you eat it. Venomous describes something that is poisonous if it bites you. Snakes can be venomous; they cannot be poisonous.
Bemused
If you’re using this word to mean amused, but in a detached sort of way, you’re using it incorrectly. What bemused really means is that you’re bewildered or confused. In fact, if you put the sounds of these two words together, they sound a bit like “bemused,” so perhaps that will help you remember? Or here is an example of correct usage that might help: “While she was mildly amused by the movie’s comedic antics, she was nevertheless bemused by the fact that he’d taken her to a comedy when she’d said she wanted to see a romantic comedy.”
Infer versus Imply
If you’re trying to read between the lines to understand what your lover is trying to tell you, then you’re attempting to infer something that isn’t stated outright. Whatever your lover is saying in his vague and couched statements is not something he is inferring, but rather something he is implying. To imply is to strongly suggest or hint at something. You can infer what you will from what your lover implies. (We do hope it works out for you two.)