<human>: My girlfriend of 1.5 years needs a new bicycle, her's is broken. I have a woman's bicycle in storage in the basement of my apartment. It a birthday gift for my ex, who never rode it (we lived together at that time). I gave her the present, she took a long trip home to Brazil, and decided she'd move back there and so broke up with me when she got back a month later. It was never ridden. 

This break-up was 3 years ago (2013). I don't have the bike for sentimental reasons, only because I was too lazy to make a craigslist ad. If I had the receipt I would have returned it long ago. 

As a practical matter, it's a new bike I could just offer to my now-gf.  On the other hand, it comes with some baggage given its origin - my gut says not to say anything about it to my new gf and let it pass despite that it would save her some money.  Just curious about other's gut-reactions.  Would it be weird to offer it to her (she might feel uncomfortable riding it) or am I being silly/immature?  By "ex" I mean ex-wife by the way, she left me out of the blue, if it matters.  This is also a bike bought at Target, nothing super-fancy.  I thought to concoct some white lie about how I came to acquire a woman's bicycle, but that would be dishonest.

Can you summarize the given text in a few sentences?
<bot>: My gf needs a bike. I have a bike. But it was going to be a gift for my ex. Should I offer it to her?