Ariana Grande Embarrassed? Boyfriend Big Sean's Romantic Serenade Makes Nathan Sykes' Ex Blush & Hide, Young Hollywood Love Too Much?

Rapper Big Sean is totally infatuated with his "Right There" muse, Ariana Grande. But is the 26-year-old singer's grand, romantic gestures too much for the young Hollywood starlet to handle right now?

The "Bang Bang" beauty recently shared this viral update on Instagram:

arianagrande: "fyi he stood up on his chair & started singing stevie wonder at the top of his lungs after this photo was taken and i ran to the bathroom and hid (not actually)."

How cute! Right? Grande seems sort of embarrassed by the whole thing...

Well, several fans approve of the adorable couple, although the "I Don't F*ck With You" emcee might be trying too hard sometimes:

wildest_luke: "You two are made for each other."

frhnadalnsr: "OMG U GUYZ ARE SO CUTE @arianagrande and @bigsean."

chileader: "You guys are perfect together soooo lovely️ <3."

swift.grandex: "Im so happy for you Ari and @bigsean."

_suicide_14: "Soo perfect... I love this <3."

But is the 21-year-old songstress finally craving some freedom? She basically hooked-up with Sean right after breaking things off with ex-boyfriend, Nathan Sykes. Maybe she needs to enjoy the single life for a while... but would that tear her beau's heart into pieces?

An alleged Dish Nation "snitch" reveals this lengthy insider's scoop:

"Ariana told their friends she's not even thinking of marriage yet. She's very happy in her relationship with Big Sean and loves him very dearly. They are soul mates and do everything together... But she's still so young. She said to her friends that's there's still much more for her to see in the world. She wants to go traveling, not stop in countries for one night for tours, but properly explore like any young person wants to do... She still feels like she has to live a little-and doesn't want to be tied down in a marriage, have kids, or do anything like that for a while. Obviously, that left Big Sean a little upset-and he's just wondering if Ariana feels the same as he does... He's [smitten] with her, they grew up with each other and their relationship is built upon a deep affection for one another... He just would like to know if they're on the same page, and if perhaps wedding bells are in their future."

But Sean can't stop gushing over his pop princess (via Complex):

"[Ariana and I] started as friends. I'd never done that. Usually you meet a girl and then start dating. We always saw each other in the studio, and we'd talk about songs we were working on. It was cool to have a girl that I could talk to about my problems. I did that with her. It's not some fake-ass, inauthentic sh*t when I say we were friends. This is something special and I appreciate every moment of it."

The pair seems extremely happy right now - Grande's one lucky gal!

RELATED: Ariana Grande Heartbreak: Big Sean Boyfriend 'Love' Still Strong Amid Nathan Sykes Sad New Break-Up Song, NO Cheating Scandal