...for a reason. When you met, you each hung on every word uttered by the other. You tried to interpret their intonation. You probably even considered the things they didn't say! What has changed?
You have. OK, you both have. Familiarity does breed contempt. If your partner isn't listening, they either believe you have little to say ~ or they don't like what they hear.
Change your tone. Try listening yourself ~ and if things fall silent, ask some pertinent questions. Resist any temptation to attack or criticise or complain. Just seek information. And their point of view. It may surprise you!