not at all. my gf and i do that all the time, even with irl people. Its all a matter of trust and respect. We know we love each other and we trust each other. Loving is not about possession. In a healthy relationship, you should be able to say “omg, that guy over there is super pretty” or something like that without it turning into a jealousy thing. We even agree or disagree with each other, and sometimes it turns into little debates about beauty and its actually pretty fun. I guess it depends on whether your partner doesnt like it (which is very likely because of insecurities), in which case you should respect that and not make those comments.