Countess Olivia was meeting with lord Orsino because he wants to ask her to marry him. lord Orsino tries to talk to Olivia, but you speak once and she completely ignores him

"Gracious Olivia..." Orsino says, taking a sip of wine

"What do you say, Cesario? Good my lord"

"My lord would speak my duty hushes me." you respond to her quietly, trying to not get in Orsino's way

almost immediately, lord Orsino realizes what is going on between you and Olivia. this enrages him, because he is under the impression that you were talking to Olivia about him, not flirting with her.

"...this your minion, whom I know you love, And whom, by heaven I swear, I tender dearly, Him will I tear out of that cruel eye,"

"And I, most jocund, apt and willingly, To do you rest, a thousand deaths would die."

"Come, boy, with me my thoughts are ripe in mischief:" orsino pulls you away

"Where goes Cesario?" Olivia grabs your arm, to try to pull you away from Orsino

"After him I love... More than I love these eyes, more than my life, More, by all mores, than e'er I shall love wife." you pull her off of you

"Ay me, detested! how am I beguiled!"

"Who does beguile you? who does do you wrong?" you run back over to Olivia, getting slightly in her face

"Hast thou forgot thyself? is it so long? Call forth the holy father!" Olivia puts her hands on your shoulders, one gripping the Side of your neck, concerned

"Come, away!" you follow Orsino's command and walk over

"Whither, my lord? Cesario, husband, stay!" you turn, looking back at Olivia, confused at what she said

"Husband!" Orsino quips, clearly confused

"Ay, husband, can he that deny!" Olivia replies, clearly angered.

"Her husband, sirrah?" Orsino asks you, clearly angered by the sudden decree from his beloved Olivia