Your sentence
הִשְׁתַּמַּשְׁתִּי+בּוֹ
Words in this sentence
בְּ־
In (a place or time).; With; By means of, using; In a manner characterized by (in English usually rendered by an adverb); While, during.; Among.; On (a medium of communication).; To the power of: Indicating an exponent.
Preposition