Romeo is Rash

In the play, I believe that Romeo's so called "true love" with Juliet is not "true", yet that Romeo acts very rash about Juliet. Throughout the play up until the middle, besides the end, Romeo has, to me, rash behaviors that no one would do if they were in true love with someone else, which when Romeo married Juliet, they barely knew each other. Romeo never did that with Rosaline, who we know he loved after crying about it for so long, he never married her at all, let alone would he have done it the day after he met her.
In a way, I believe that Juliet could have been some kind of "rebound" for Romeo. I believe this because she is the only thing that made him stop thinking about Roaline, but so suddenly too, even though the only way he described her was of her beauty; he knew almost nothing about her besides that she was a Capulet. She could have been a rebound because her beauty made Romeo stop thinking about Rosaline's beauty, which was "the most beautiful beauty", and want to marry her right away so that he could keep that beauty. As Friar Lawrence says to Romeo, "Your love is not in your hearts, but in your eyes". This proving my point that they don't truly love each other they just love each others looks, so getting married was a very rash, not well though out idea for both of them, also consdering that one is a Capulet and one is a Montague.
Lastly some people may say that they did have true love, or else they wouldn't have killed themselves for each other. I disagree with this point. When Romeo dated Rosaline, they were truly in love, as Romeo says, but he also talks about her beauty more than anything, meaning that this is the same problem with Juliet. But, even on top of that, he was dating her for quite some time and never even thought about marriage at first, unless he did but he never actually went through with it like he did with Juliet. Now, the reason why Romeo most likely would never think about going to extreme measures with death with Rosaline, considering something like that did happen, is for instance how when she left him, "for good", all he did was weep, and I believe that he would've done the same thing if she had died. This is why when Romeo killed himslef for someone he barely knew, he was being rash and not thinking about it. I guess this example could be argued both ways, but bottom line is that Romeo's rash decisions did not lead him a good path.