She tries not to beg, she always tries not to beg because it just encourages him. Given his druthers, Bucky's spent fucking hours kissing her cunt before, licking his own come out of her and licking lazily at her clit until she's sobbing, whole body a live wire waiting desperate to come. He'll stay at it until every touch hurts and then keep at it until that pain goes transformative and she comes screaming, thighs boxing his ears and her whole body seizing up.