How was he to know that OP would chug the glass? (If that is what OP did.) Maybe he excused himself for a moment and op drained the glass before he returned?

I would think he would stay and monitor the glass considering his plan. Besides. sipping and chugging look completely different and unless the ring was small, she had a ways to go before she ingested it.

If the ring had some weight to it, as soon as she started chugging it could have slid into her mouth before the bf really had a chance to say anything.

From my experience, even when you're sipping wine, you gulp down the last drop (because you have to properly tilt the glass to get the last bit out, right?) And if the ring was concealed in that last little bit of wine, I reckon it would have been easy to swallow all in one. (Plus if it had been like complimentary wine which sometimes restaurants provide if you tell them you plan to propose, they basically only give you enough for three mouthfuls, half-filling really thin glasses) In which case, the boyfriend should have really prompted her at some point. Like "look in your glass" or whatever, before she swallowed it all!

if it were at the bottom, it'd clink around.

55 I agree, surely if someone put something like a ring in your drink, as you neared the bottom, wouldn't you feel it against your lips, tongue, teeth etc. OP must have just opened the hatchet and downed the glass for a bottoms up.

So... You didn't bother to read any of the other comments first? Brilliant.

No, she is going to flush it down the toilet and demand a new one.

I pity her boyfriend .....

You've seen this happen before?