Oh that doesn't look good...
Okay, I can understand Ryuuta frustration, he was set up by his father to have an only girlfriend and future wife who was trying to oppose his parent just a little bit (climb the tree) but obviously giving off vibes Haruka isn't in one bit interested in him at all.
He couldn't be interested in any other girl, couldn't make romantic feelings to anyone and he is a grown man now, this must suuuuuuuck, but he shouldn't be angry on Haruka but towards his father and mother for settling him up.
Marie father stagnation is what makes the vineyard in trouble, his inability to taste the vine piles on to it, her future wasn't inheritance of the vineyard... although... her grandpa seems like pushed it on her by teaching her instead of his son...